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In 1977, after just 50 home games, the Blue Jays set an MLB record for a first-year expansion team, with an overall attendance of 1,219,551 during those games. By the end of the season, 1,701,152 fans had attended. After setting an attendance record in 1990, with 3,885,284 fans, in 1991, the Blue Jays became the first MLB team to attract over four million fans, with an attendance of 4,001,526, followed by 4,028,318 in 1992. Each of those records were broken in 1993 by the expansion Colorado Rockies, although the Blue Jays' 1993 attendance of 4,057,947 stood as an AL record for 12 years until it was broken by the 2005 New York Yankees.

Several Blue Jays became very popular in Toronto and throughout the major leagues, starting with Dave Stieb, whose seven All-Star selections is a franchise record. He is closely followed by Roy Halladay and José Bautista, who were selected six times each, and by Roberto Alomar and Joe Carter, who were selected five times each. Bautista set a major league record in 2011 (which only stood for a year), with 7,454,753 All-Star votes. In his first season with the Blue Jays in 2015, Josh Donaldson set a new major league record by receiving 14,090,188 All-Star votes.

The team is popular throughout Canada, as the only MLB team based in the country following the relocation of the Montreal Expos to Washington. The team has played a number of exhibition games at BC Place in Vancouver including three-game series against the Milwaukee Brewers prior to both the 1984 and 1985 seasons (the Vancouver Canadians were the AAA farm team of the Brewers at the time), as well as single games against the Detroit Tigers and Brewers in 1993 and against the Montreal Expos and Seattle Mariners in 1994 in a series billed as the "Baseball Classic". The Jays also played the Cleveland Indians in an exhibition game at War Memorial Stadium in nearby Buffalo, New York in 1987. More recently, the club has hosted a pair of exhibition games at Olympic Stadium in Montreal prior to the start of the season against the New York Mets (2014), Cincinnati Reds (2015), Boston Red Sox (2016), Pittsburgh Pirates (2017), St. Louis Cardinals (2018), Milwaukee Brewers (2019). A series against the New York Yankees was scheduled for 2020, but was cancelled due to the COVID-19 pandemic. The club also has discussed playing more games at BC Place with the president of the Vancouver Canadians.

During the seventh-inning stretch of home games, before singing "Take Me Out to the Ball Game," Blue Jay fans sing and clap to the pop song "OK Blue Jays" by Keith Hampshire and The Bat Boys, which was released in 1983. The song was remixed in 2003, and since then, the new, shortened version has been played at home games.

At home games, the "Let's Go Blue Jays" chant is played four times followed by Charge being played thrice.

From 1979 to 1999, BJ Birdy served as the Blue Jays' sole mascot, played by Kevin Shanahan. In 2000, he was replaced by a duo named Ace and Diamond. After the 2003 season, Diamond was removed by the team, leaving Ace as the team's sole mascot. Since the 2010s, Ace has been accompanied by his younger brother, Junior. This usually happens on the Jr. Jay Saturday promotions until the end of the 2017 season. The promotions were moved to select Sundays since the 2018 season since the Blue Jays can no longer hold early Saturday afternoon games to accommodate American national broadcasts on Fox, though Fox did occasionally broadcast Blue Jays games at the Rogers Centre.

Since 2012, every Sunday home game, the Blue Jays pay tribute to a member of the Canadian Armed Forces. During the third inning, the team presents the honoured member with a personalized jersey.

Since 2005, "The Star-Spangled Banner" has been sung before "O Canada" at every home game. In some home games (including Canada Day home games and playoffs), "O Canada" is sung in English and French. When "O Canada" was sung during the Home Opener, Canada Day, and playoff games, a giant Canadian flag was carried by members of the Canadian Armed Forces. Sportsnet only airs the national anthems during the home opener, Canada Day, and playoff games. On June 29, 2019, "O Canada" was sung in Cree and English. On September 30, 2021, the National Day for Truth and Reconciliation, "O Canada" was sung in English, French, and Anishinaabemowin. On the following National Day for Truth and Reconciliation, September 30, 2022, "O Canada" was sung in French, English, and Blackfoot. For Blue Jays road games, "O Canada" is sung before the "Star Spangled Banner" as all road games (since the Expos moved to Washington, DC) for the Blue Jays are in the United States.

The Blue Jays traditionally host an afternoon home game during Canada Day. During the game, the team wears red jerseys instead of blue jerseys. During the pre-game ceremony, a giant Canadian flag is carried by members of the Canadian Armed Forces while "O Canada" is sung in English and French by a member of the Royal Canadian Air Force Band. The game was cancelled in 2020 due to the COVID-19 pandemic. In 2021, the game was held in Buffalo, New York due to Canada–U.S. travel restrictions.

The Blue Jays operate a store called the Jays Shop that sells primarily Blue Jays merchandise. This store has two locations at Rogers Centre, though, until January 2023, there was an additional location in the Toronto Eaton Centre shopping mall.

The Blue Jays wore pullover uniforms during their first decade of existence. The front of the home white uniforms contained the team name in a unique blue/white/blue split-letter style, with the team logo centred below. The road uniforms were powder blue, with the city name in front and the team logo centred below. Initially, the city name was rendered in bold blue letters before gaining a white outline the following season. By 1979, it was replaced by the team name in a split-lettered white/blue/white style. Player numerals also used the split-letter style, except on the road uniform during its first two seasons. Player names in blue were added to both uniforms for the 1980 season but were dropped from the road uniform in 1981. The caps were blue with the Blue Jays logo on a white panel in front.

In 2008, the Blue Jays' powder blue road uniform from this era was restored as an alternate home uniform worn every Friday until 2010.

The Blue Jays adopted buttoned uniforms upon moving to Rogers Centre (then SkyDome) in 1989. Aside from the additions of buttons and belts, the only change affecting the home uniforms was the relocation of the team logo to the left chest. The road uniforms changed from powder blue to grey, while the city name and numerals in blue/white/blue split letters were emblazoned, and the logo moved to the left chest. Player names were also added to the road uniform. All-blue caps were worn with their road uniform while keeping the white-panelled blue caps at home. By 1993, the all-blue caps were worn universally, supplanting and eventually retiring the original cap design.

In 1994 the Blue Jays began wearing blue alternate uniforms with the team name and numerals in white/blue/white split letters.

The Blue Jays updated their logo prior to the 1997 season with a new bird design and an enlarged red maple leaf at the back. The usage of red was greatly increased on the team's new uniforms. On the home uniforms, the letters and numerals were changed to blue/teal/blue split letters, while road uniform letters and numerals were changed to blue/red/blue split letters. On the alternate blue uniforms, split letters and numerals became red/blue/red. Red also appeared on the pant and sleeve stripes, while the new logo occupied the left sleeve. Player names also took on the new block split-letter style. An updated all-blue cap was paired with the home and road uniforms, while a red-brimmed blue cap (with a modified logo without a baseball) was used with the blue alternates.

In 1999 the Blue Jays unveiled an alternate sleeveless white uniform, featuring the same lettering style as the regular home uniform. However, the chest numerals were replaced with the primary logo. Blue undershirts were worn with this uniform.

Before the 2001 season, slight modifications were made to the uniforms, eliminating the tricolour stripes and adding a single colour piping along the chest and neck. While the home uniforms remained mostly intact, the road uniforms gained blue sleeves in a faux-vest design. On the alternate white uniform (now a faux vest instead of a straight sleeveless design), the new "T-bird" logo replaced the primary "jay leaf" logo, which moved to the left sleeve. In 2003, the "T-bird" logo became the primary, taking over the previous logo's placement on the caps and sleeves, while the alternate white uniforms brought back chest numerals. The "T-bird" logo depicts a blue jay flexing its biceps and is nicknamed "Muscle Jay."

Before the 2004 season, the Blue Jays adopted a new visual identity, going with a black, silver and graphite motif. The home and black alternates simply read "Jays" in front and in a 3D-oriented diagonal arrangement, with the bird connected to the letter "J." Letters and numerals were in graphite with light blue and silver trim. The road uniforms featured the city name in a similar letter style as the logo, with graphite letters and numerals trimmed in light blue and silver. In 2008, however, amid complaints of illegibility, the Blue Jays tweaked their road uniforms to include 3D-style block letters and numerals in light blue trimmed in black and white, along with chest numerals. The "J-bird" alternate was added to the left sleeve. A red maple leaf would be added on the right sleeve starting in 2009. The Blue Jays wore all-black caps with the "J-bird" logo for much of the uniforms' existence, save for the 2004 and 2005 seasons when they wore all-graphite caps at home, and in 2007 when an alternate all-black cap with the "T" from the previous road uniform was used.

Prior to the 2012 season, the Blue Jays unveiled new uniforms and a new logo. The logo is a modernized version of the original logo used from 1977 to 1996. The bird's head was also made sleeker than its 1977–1996 predecessor. The uniforms are similar to the ones used from 1989 to 1996, the team's most successful era. New serifed split letters were also released. In 2015, the Blue Jays began wearing a modernized version of the white-panelled blue caps they originally wore from 1977 to 1993 as an alternate.

Before the 2020 season, the Blue Jays unveiled a modernized version of the powder blue uniforms, featuring navy/white/navy serifed split letters and numerals. These uniforms are paired with a powder-brimmed navy cap and an all-navy helmet.

Since 1996, the Blue Jays wore predominantly red or red-accented uniforms every July 1, Canada Day. The uniforms were based on the team's alternate uniforms they wore at the time but with red as the primary colour. On a few occasions, the Blue Jays added red trim to an existing white uniform (or, in the case of the 2006 uniforms, their black alternates) and sometimes added the flag of Canada or a red maple leaf on the uniform.

In 2024, the Blue Jays unveiled a City Connect uniform inspired by Toronto's nightlife. The jersey is nicknamed "Night Mode" and is a "pitch blue" (dark blue) uniform that features an illustration of the Toronto skyline in royal blue, centred by the "Toronto" wordmark in red. The "pitch blue" colour is a reference to Lake Ontario's reflection at night. The traditional Blue Jays logo patch on the sleeve is recoloured to match the uniform. The cap is also "pitch blue" and features a red maple leaf at the centre of a stylized red and blue "T" in split letters.

The Montreal Expos were the Blue Jays' geographic National League rival, being the other Canadian MLB team before it was relocated. From 1978 to 1986, the teams played an annual mid-season exhibition game known as the Pearson Cup, named after former Prime Minister Lester B. Pearson. The teams began facing each other in the regular season in 1997 with the advent of interleague play. During the 2003 and 2004 seasons, the Expos' last two seasons before relocating to Washington, D.C., as the Nationals, the Pearson Cup was awarded after a pair of three-game sets.

The Detroit Tigers are the Blue Jays' geographic and traditional rival, dating back to the 1980s, when the teams were AL East contenders. The Tigers moved to the AL Central in 1998, and the rivalry has died down as a result, with the teams facing each other only six to seven times per year since 2011. Depending on traffic and border delays, Detroit is about a four-hour drive from Toronto. According to The Detroit News, a July 2017 three-game series at Comerica Park against the Blue Jays drew a season-best-to-date total attendance of 115,088.

Although the Seattle Mariners are not a divisional rival, many Blue Jays fans from Western Canada travel to Seattle when the Blue Jays play there as Seattle is geographically closer to Western Canada than Toronto is. Depending on traffic and border delays, Seattle is about a three-hour drive from Vancouver. The Seattle Times estimated that Blue Jays fans represented around 70 percent of the crowd in Safeco Field for a June 2017 weekend series.

The Blue Jays' former radio play-by-play announcer, Tom Cheek, called every Toronto Blue Jays game from the team's inaugural contest on April 7, 1977, until June 3, 2004, when he took two games off following the death of his father—a streak of 4,306 consecutive regular-season games and 41 postseason games. Cheek later died on October 9, 2005, and the team commemorated him during their 2006 season by wearing a circular patch on the left sleeve of their home and road game jerseys. The patch was adorned with the letters 'TC', Cheek's initials, as well as a stylized microphone. Cheek is also honoured with a place in the Blue Jays' "Level of Excellence" in the upper level of the Rogers Centre; the number 4,306 is depicted beside his name. In 2008, Cheek received the third most votes from fans to be nominated for the Ford C. Frick Award for broadcasting excellence. Cheek finally received the Frick Award posthumously in 2013 after nine years on the ballot.

Radio broadcasts of Blue Jays games originate from Sportsnet 590 CJCL in Toronto, which, like the Blue Jays, is owned by Rogers Communications. After Cheek's retirement in 2005, Jerry Howarth, who had been Cheek's broadcasting partner since 1982, took over as lead play-by-play announcer, with Mike Wilner as the secondary play-by-play announcer. During the 2007 to 2012 seasons, former Blue Jays catcher Alan Ashby was the colour commentator. Former Blue Jays pitcher Jack Morris served as the colour commentator during the 2013 season, after which he was replaced by former Montreal Expos catcher Joe Siddall since the 2014 season.

Former Blue Jays pitcher Dirk Hayhurst filled in for Morris for some games during the 2013 season.

Another former catcher for the Blue Jays, Gregg Zaun, has served as the occasional colour commentator from the 2011 season until the end of the 2017 season when he was terminated amid accusations of improper conduct from several female employees.

Following Howarth's retirement in the 2017 season, Ben Wagner was hired as the primary radio play-by-play announcer, splitting said duties with Dan Shulman and Mike Wilner.

In November 2020, Mike Wilner was laid off by the team. In February 2021, it was announced that "in an effort to minimize travel and closely adhere to team, league, and government protocols related to the pandemic", all radio broadcasts for the 2021 season will be a simulcast of the television broadcast. Wagner will assume an alternative role. However, once the Blue Jays returned to Rogers Centre in late July 2021, dedicated radio broadcasts resumed.

The Blue Jays have the largest geographical home market in all of baseball, encompassing all of Canada. Despite this, the number of radio stations that broadcast games is actually quite small. Only 18 radio stations across the country aired at least some Blue Jays games during the 2021 season, which is fewer affiliates than most MLB teams, which have more stations covering smaller geographic areas.

All Blue Jays games are carried nationally on Sportsnet (which, like the Blue Jays, is owned by Rogers Communications). As of 2023, Dan Shulman serves as the lead play-by-play announcer, with Buck Martinez as the primary colour commentator; on select series, Toronto Raptors play-by-play announcer Matt Devlin calls the game in place of Shulman, and Joe Siddall works colour commentary in place of Martinez. Prior to that, Martinez had been the primary play-by-play announcer alongside colour commentator Pat Tabler, with Shulman only calling games sporadically since 2016. In previous years, the colour analyst role rotated between Pat Tabler, Rance Mulliniks, Darrin Fletcher, and from 2011 to 2017, Gregg Zaun. Sportsnet became the team's primary carrier soon after it launched in the late 1990s and became the team's exclusive broadcaster in 2010. As of August 2010, Sportsnet One also broadcasts Blue Jays games (often in case of scheduling conflicts with the main Sportsnet channels). Rogers was, however, criticized by fans and critics due to Sportsnet One only being carried by Rogers Cable systems on launch.

Sportsnet's broadcasts of the 2015 American League Division Series involving the Blue Jays were among the highest-rated telecasts in network history, with Game 4 drawing an audience of 4.38 million viewers.

In September 2012, AMI-tv simulcast three Blue Jays games with described video provided by CJCL correspondent Sam Cosentino, which included explanations of on-screen graphics. Paul Beeston praised AMI's involvement, stating that "to our knowledge, we are the first sports organization to have our games provided through this revolutionary approach to accommodating the needs of the blind and low-vision community."

On June 27, 2013, Rogers' over-the-air Toronto multicultural Omni Television station CJMT-DT simulcast a Blue Jays game, scheduled to be started by Taiwanese player Chien-Ming Wang, with commentary in Mandarin, marking the first ever Canadian MLB broadcast in the language. In June 2018, Omni announced that it would air Sunday afternoon games in Tagalog, the most spoken language of the Philippines, through the remainder of the season. Sportsnet and Omni announced a regular season of Sunday broadcasts in Tagalog for the 2019 season.

TVA Sports has aired games in French since 2011, with Denis Casavant and François Paquet on play-by-play and Rodger Brulotte on colour. The channel currently has rights to 81 Blue Jay games per season in a three-year deal signed in 2023. Jacques Doucet, former Montreal Expos radio announcer, broadcast the Blue Jays on TVA Sports from 2011 until his retirement in 2022.

The Sports Network (TSN), which (like the Jays) was owned by Labatt from 1984 to 1995, served as the primary cable television outlet for the Blue Jays prior to the launch of Sportsnet. TSN (and later, its sister channel TSN2) continued to carry approximately ten Jays games through the 2009 season until May 2010; most recently, Rod Black handled play-by-play while Tabler served as colour commentator on these telecasts. CBC has carried Blue Jays games intermittently throughout the team's history, most recently in 2007 and 2008; those broadcasts featured Jim Hughson as the play-by-play announcer, and former Blue Jays Rance Mulliniks and Jesse Barfield on colour commentary. Games also aired on CTV (except in Montreal) from the team's inception until the late 1990s. The Blue Jays have not appeared over-the-air in Canada in English since 2008.

In 2008, Rogers Communications, owner of the Jays, was granted a license by the Canadian Radio-Television Commission (CRTC) for a "Baseball TV" specialty channel. The channel would have been dedicated to coverage of baseball, combining content from the United States–based MLB Network with original Canadian content. However, the channel was never launched, and Rogers sponsored an application to allow distribution of the U.S. MLB Network on Canadian providers instead.

Due to the structure of Rogers' MLB broadcast contracts, Sportsnet is not permitted to use its domestic production for Blue Jays games if the team is in postseason play (as it is technically still considered a regional broadcaster) and instead carries the U.S. broadcast (such as Fox in 2015, and TBS in 2016). This is in contrast to the NBA's Toronto Raptors (via TSN and Sportsnet), as well as the NHL and MLS's Canadian-based teams (via Hockey Night in Canada on CBC and Sportsnet, and TSN respectively) who were allowed to produce their own broadcasts during postseason games. Buck Martinez has served as a colour commentator for post-season coverage ultimately simulcast by Sportsnet, however, having formerly worked Division Series games for TBS and on the MLB International broadcast of the 2016 World Series. In 2022, however, MLB allowed Sportsnet to carry its own production of Blue Jays postseason games as it is technically a national broadcaster.

The Toronto Blue Jays farm system consists of six minor league affiliates.

Only one Blue Jays pitcher has thrown a no-hitter in franchise history. It was accomplished by Dave Stieb on September 2, 1990, after losing three no-hit bids with two outs in the ninth inning.

No perfect games, a special subcategory of no-hitter, has been thrown in Blue Jays history. The franchise came closest on August 4, 1989, when Stieb gave up a double to Yankees' batter Roberto Kelly with two outs in the ninth, who then scored by the next batter.

Roger Clemens won the pitching Triple Crown in 1997 and 1998.

Eleven former Blue Jays, one former manager, and one former general manager have been elected into the Baseball Hall of Fame. Second baseman Roberto Alomar, elected to the Hall of Fame in 2011, is the first player to be inducted based primarily on service as a player for the Blue Jays.

Bobby Doerr, a second baseman with the Boston Red Sox, served as a hitting coach with the Blue Jays early in their history, 1977–1981, and was the first person associated with the franchise to be elected to the Baseball Hall of Fame, in 1986.

Early Wynn, the Baseball Hall of Fame pitcher (1972) and career 300-game winner, was a radio broadcaster for the Blue Jays with Tom Cheek during their first few years, 1977–1981.

Roy Halladay P Retired March 29, 2018 Jackie Robinson All MLB Honored April 15, 1997

Soon after becoming the first person to be inducted in the Hall of Fame as a Blue Jay, on July 31, 2011, second baseman Roberto Alomar was the first person to have his number, #12, retired by the Blue Jays. However, #12 was unretired due to controversies surrounding Alomar. Jordan Hicks became the first Blue Jay since 2011 to wear this number.

On March 29, 2018, the Blue Jays retired #32 in honour of Roy Halladay, who died in an airplane crash on November 7, 2017, becoming the second number to be retired by the Blue Jays.

In 1996, the Blue Jays instituted a "Level of Excellence" on the 500 level of the Rogers Centre, honouring "tremendous individual achievement."

Tony Fernández SS, 3B: 1983–1990, 1993, 1998–1999, 2001	George Bell LF: 1981–1990	Carlos Delgado 1B: 1993–2004
Joe Carter RF, 1B: 1991–1997	Dave Stieb P: 1979–1992, 1998	Cito Gaston Manager: 1989–1997, 2008–2010
Tom Cheek Broadcaster: 1977–2005	Paul Beeston VP: 1976–1989; President: 1989–1997, 2008–2015	Roy Halladay P: 1998–2009
Pat Gillick GM: 1978–1994	José Bautista RF, 3B: 2008–2017

Players' uniform numbers were listed—and in Tom Cheek's case, the number of consecutive games he called for the Blue Jays—until the 2013 All-Star Break, even though, with the exception of Roberto Alomar and Roy Halladay these numbers have not been retired. During the 2013 All-Star Break, the Level of Excellence was redesigned for the addition of Carlos Delgado's name. The redesign removed all uniform numbers from the Level of Excellence aside from Roberto Alomar's retired #12, Roy Halladay's retired #32 and Tom Cheek's 4306 consecutive called games streak. On April 30, 2021, the Blue Jays announced that they would remove Alomar from the Level of Excellence and take down his banner at Rogers Centre after he was banned from baseball for sexual harassment.

On March 5, 2023, the Blue Jays announced that Jose Bautista would join the Level of Excellence on August 12, 2023, in a pre-game ceremony prior to their game that day versus the Chicago Cubs.

The Jays Care Foundation is the charitable arm of the Toronto Blue Jays baseball organization and conducts events to support local organizations and community members. They also provide baseball education and life skill workshops to the youth of communities across Canada.

Some text copied via the GFDL from BR Bullpen article on the 2009 Blue Jays

Wikimedia Commons has media related to Toronto Blue Jays.

• Toronto Blue Jays official website