The 2018 WGC-Mexico Championship was a golf tournament played March 1–4 at Club de Golf Chapultepec in Naucalpan, Mexico, just west of Mexico City. It was the 19th time the WGC Championship was played, and the first of the World Golf Championships events to be staged in 2018. The approximate elevation of the course's clubhouse is 2,400 meters (7,870 ft) above sea level.

Phil Mickelson won the tournament on the first playoff hole; it was his first tour victory in over 4½ years, since The Open Championship in 2013.

Club de Golf Chapultepec

Hole	1	2	3	4	5	6	7	8	9	Out	10	11	12	13	14	15	16	17	18	In	Total
Yards	316	387	186	506	445	625	235	525	382	3,607	450	622	406	225	497	575	403	172	388	3,738	7,345
Meters	289	354	170	463	407	572	215	480	349	3,299	411	569	371	206	441	526	369	157	355	3,405	6,704
Par	4	4	3	4	4	5	3	4	4	35	4	5	4	3	4	5	4	3	4	36	71

Source:

The field consisted of players from the top of the Official World Golf Ranking and the money lists/Orders of Merit from the six main professional golf tours. Each player is classified according to the first category in which he qualified, but other categories are shown in parentheses.

1. The top 50 players from the Official World Golf Ranking, as of February 19, 2018

Kiradech Aphibarnrat (2,5), Daniel Berger (2,3), Rafa Cabrera-Bello (2,5), Patrick Cantlay (2,3), Paul Casey (2,3), Kevin Chappell (2,3), Jason Dufner (2,3), Tony Finau (2,3,4), Ross Fisher (2,5,6), Matt Fitzpatrick (2,5), Tommy Fleetwood (2,5,6), Rickie Fowler (2,3), Dylan Frittelli (2,5,6), Sergio García (2,3,5), Branden Grace (2,5), Adam Hadwin (2,3), Brian Harman (2,3), Tyrrell Hatton (2,5), Charley Hoffman (2,3), Yuta Ikeda (2), Dustin Johnson (2,3,4), Kevin Kisner (2,3), Satoshi Kodaira (2,7), Matt Kuchar (2,3), Li Haotong (2,5,6), Marc Leishman (2,3), Phil Mickelson (2), Francesco Molinari (2,5), Alex Norén (2,5), Louis Oosthuizen (2), Pat Perez (2,3,4), Thomas Pieters (2,5), Jon Rahm (2,3,4,5), Chez Reavie (2,4), Patrick Reed (2,3), Justin Rose (2,3,5), Xander Schauffele (2,3), Charl Schwartzel (2), Webb Simpson (2,3), Jordan Spieth (2,3), Brendan Steele (2,4), Justin Thomas (2,3,4), Jhonattan Vegas (2,3), Bubba Watson (2), Gary Woodland (2,3,4)

• Brooks Koepka (2,3) did not play due to injury.
• Jason Day (2,3,4), Hideki Matsuyama (2,3), Rory McIlroy (2,5,6), and Henrik Stenson (2,5) did not play.

2. The top 50 players from the Official World Golf Ranking, as of February 26, 2018

3. The top 30 players from the final 2017 FedExCup Points List

Russell Henley, Kyle Stanley

4. The top 10 players from the 2018 FedExCup Points List, as of February 26, 2018

Patton Kizzire

5. The top 20 players from the final 2017 European Tour Race to Dubai

Paul Dunne, Peter Uihlein, Bernd Wiesberger

6. The top 10 players from the 2018 European Tour Race to Dubai, as of February 19, 2018

Jorge Campillo, Joost Luiten, Wade Ormsby, Chris Paisley, Shubhankar Sharma

7. The top 2 players not exempt from the final 2017 Japan Golf Tour Order of Merit

Yūsaku Miyazato

• Chan Kim did not play due to a wrist injury.

8. The top 2 players from the final 2017 PGA Tour of Australasia Order of Merit

Adam Bland, Brett Rumford

9. The top 2 players from the final 2017 Sunshine Tour Order of Merit

Dean Burmester, Brandon Stone

10. The top 2 players from the final 2017 Asian Tour Order of Merit

Gavin Green, David Lipsky

11. The highest ranked available player from Mexico from the Official World Golf Ranking as of February 19, 2018

Abraham Ancer

Thursday, March 1, 2018

Place	Player	Score	To par
1	Louis Oosthuizen	64	−7
T2	Chris Paisley	65	−6
	Xander Schauffele
	Shubhankar Sharma
T5	Kiradech Aphibarnrat	66	−5
	Rafa Cabrera-Bello
7	Jon Rahm	67	−4
T8	Tony Finau	68	−3
	Rickie Fowler
	Sergio García
	Brian Harman
	Pat Perez

Friday, March 2, 2018

Place	Player	Score	To par
1	Shubhankar Sharma	65-66=131	−11
T2	Rafa Cabrera-Bello	66-67=133	−9
	Sergio García	68-65=133
	Xander Schauffele	65-68=133
T5	Kiradech Aphibarnrat	66-69=135	−7
	Brian Harman	68-67=135
	Dustin Johnson	69-66=135
	Louis Oosthuizen	64-71=135
	Pat Perez	68-67=135
	Brendan Steele	69-66=135
	Bubba Watson	69-66=135

Saturday, March 3, 2018

Place	Player	Score	To par
1	Shubhankar Sharma	65-66-69=200	−13
T2	Rafa Cabrera-Bello	66-67-69=202	−11
	Sergio García	68-65-69=202
	Tyrrell Hatton	70-68-64=202
	Phil Mickelson	69-68-65=202
T6	Brian Harman	68-67-68=203	−10
	Dustin Johnson	69-66-68=203
	Pat Perez	68-67-68=203
	Xander Schauffele	65-68-70=203
10	Justin Thomas	72-70-62=204	−9

Sunday, March 4, 2018

Place	Player	Score	To par	Money (US$)
T1	Phil Mickelson	69-68-65-66=268	−16	Playoff
	Justin Thomas	72-70-62-64=268
T3	Rafa Cabrera-Bello	66-67-69-67=269	−15	510,500
	Tyrrell Hatton	70-68-64-67=269
T5	Kiradech Aphibarnrat	66-69-71-65=271	−13	330,500
	Brian Harman	68-67-68-68=271
T7	Sergio García	68-65-69-70=272	−12	239,750
	Dustin Johnson	69-66-68-69=272
T9	Adam Hadwin	70-71-67-66=274	−10	182,000
	Shubhankar Sharma	65-66-69-74=274
	Bubba Watson	69-66-72-67=274

Final round

Hole	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Par	4	4	3	4	4	5	3	4	4	4	5	4	3	4	5	4	3	4
Mickelson	−12	−13	−12	−13	−13	−14	−14	−14	−14	−15	−14	−14	−14	−14	−15	−16	−16	−16
Thomas	−10	−11	−11	−11	−11	−12	−12	−12	−12	−13	−13	−14	−14	−14	−15	−15	−14	−16
Cabrera-Bello	−13	−13	−13	−13	−12	−12	−13	−13	−13	−13	−13	−12	−13	−13	−14	−14	−14	−15
Hatton	−12	−13	−13	−14	−14	−13	−13	−13	−13	−13	−12	−13	−13	−14	−16	−16	−16	−15
Aphibarnrat	−7	−8	−8	−8	−9	−10	−10	−10	−10	−11	−12	−12	−12	−13	−13	−12	−12	−13
Harman	−11	−11	−11	−10	−10	−10	−10	−10	−11	−11	−12	−13	−13	−14	−14	−13	−13	−13
Sharma	−13	−13	−13	−13	−12	−12	−12	−12	−12	−12	−12	−13	−12	−11	−11	−12	−11	−10

Cumulative tournament scores, relative to par

Eagle

Birdie

Bogey

Double bogey

Source:

The playoff started on the par-3 17th hole. From the tee, Thomas went past the green and Mickelson found the putting surface. Thomas left his difficult chip well short, Mickelson just missed his birdie putt and tapped in for par; Thomas missed the par putt he needed to extend the playoff.

Place	Player	Score	To par	Money (US$)
1	Phil Mickelson	3	E	1,700,000
2	Justin Thomas	–	–	1,072,000

• Official website
• Coverage on the European Tour's official site