Justin Thomas defeated fellow American Will Zalatoris by one stroke in a three-hole aggregate playoff on Sunday to win the PGA Championship at Southern Hills.
Thomas, the 2017 PGA champion captured his second major title by going two-under par in the playoff with Zalatoris on one-under.
Zalatoris and Thomas each birdied the par-5 13th. At the par-4 17th, Thomas drove the green and two-putted for birdie from 36 feet while Zalatoris chipped to seven feet but missed his birdie bid.
At the 18th hole, Zalatoris missed a 40-foot birdie try and Thomas two-putted from 26 feet, tapping in for par and the victory.
Thomas, who began the day seven strokes adrift, matched the greatest last-round comeback in PGA history, American John Mahaffey's seven-shot rally at Oakmont in 1978.
The title came after a heartbreaking last-hole collapse by Chile's Mito Pereira, who led all day only to end with a double-bogey disaster and squander the trophy.
Thomas fired a three-under-par 67 in Sunday's final round and Zalatoris, last year's Masters runner-up, shot 71 to finish 72 holes at Southern Hills deadlocked on five-under 275.
Pereira, who clung to at least a share of the lead throughout a dramatic final round, drove way right into water on the 18th hole on the way to a double bogey to tumble from the lead, shooting a 75 to share third with American Cameron Young on 276.
FINAL ROUND SORES
275 - x-Justin Thomas (USA) 67-67-74-67, Will Zalatoris (USA) 66-65-73-71
276 - Cameron Young (USA) 71-67-67-71, Mito Pereira (CHI) 68-64-69-75
277 - Chris Kirk (USA) 68-70-71-68, Tommy Fleetwood (ENG) 71-70-69-67, Matthew Fitzpatrick (ENG) 68-69-67-73
278 - Rory McIlroy (NIR) 65-71-74-68
279 - Brendan Steele (USA) 70-72-69-68, Tom Hoge (USA) 66-74-70-69, Abraham Ancer (MEX) 67-69-70-73, Seamus Power (IRL) 71-69-67-72
280 - Cameron Smith (AUS) 68-70-73-69, Lucas Herbert (AUS) 68-73-68-71, Max Homa (USA) 70-69-70-71, Xander Schauffele (USA) 68-73-69-70, Davis Riley (USA) 68-68-73-71, Tyrrell Hatton (ENG) 70-68-74-68, Justin Rose (ENG) 71-70-71-68
281 - Sam Burns (USA) 71-67-71-72, Webb Simpson (USA) 69-75-65-72, Talor Gooch (USA) 69-70-74-68
282 - Lucas Glover (USA) 75-69-68-70, Rickie Fowler (USA) 71-70-71-70, Stewart Cink (USA) 69-68-71-74, Kevin Na (USA) 68-71-72-71, Aaron Wise (USA) 69-72-71-70, Joaquin Niemann (CHI) 68-71-72-71, Shane Lowry (IRL) 70-72-71-69
283 - Adrià Arnaus (ESP) 72-68-70-73, Bernd Wiesberger (AUT) 72-67-74-70, Bubba Watson (USA) 72-63-73-75, Tony Finau (USA) 69-72-74-68
284 - Matt Kuchar (USA) 67-71-73-73, Patrick Reed (USA) 69-70-73-72, Keith Mitchell (USA) 72-72-72-68, Brian Harman (USA) 74-70-71-69, Gary Woodland (USA) 70-68-71-75, Jordan Spieth (USA) 72-69-74-69, Marc Leishman (AUS) 72-71-73-68
285 - Lee Kyung-Hoon (KOR) 69-73-71-72, Viktor Hovland (NOR) 70-70-75-70, Cameron Tringale (USA) 72-68-72-73, Kevin Streelman (USA) 71-72-75-67, Troy Merritt (USA) 73-70-72-70, Adam Schenk (USA) 71-72-72-70, Luke List (USA) 74-70-71-70
286 - Laurie Canter (ENG) 72-70-70-74, Keegan Bradley (USA) 72-70-73-71, Harold Varner III (USA) 71-71-72-72, Denny McCarthy (USA) 73-68-74-71, Cameron Davis (AUS) 72-72-72-70, Jon Rahm (ESP) 73-69-76-68
287 - Ryan Fox (NZL) 70-70-70-77
288 - Sebastián Muñoz (COL) 74-70-69-75, Jason Day (AUS) 71-72-72-73, Francesco Molinari (ITA) 70-72-75-71, Brooks Koepka (USA) 75-67-72-74, Collin Morikawa (USA) 72-72-74-70
289 - Jason Kokrak (USA) 74-68-77-70, Russell Henley (USA) 70-73-70-76, Lanto Griffin (USA) 72-69-75-73, Kim Si-Woo (KOR) 71-72-76-70, Hideki Matsuyama (JPN) 72-72-72-73, Rikuya Hoshino (JPN) 74-70-69-76, Charl Schwartzel (RSA) 71-73-73-72, Louis Oosthuizen (RSA) 73-71-73-72
290 - Billy Horschel (USA) 75-69-77-69
291 - Beau Hossler (USA) 69-71-78-73, Kramer Hickok (USA) 71-71-75-74
292 - Shaun Norris (RSA) 71-72-74-75, Justin Harding (RSA) 71-72-75-74, Thomas Pieters (BEL) 69-73-77-73, Adam Hadwin (CAN) 73-71-75-73
295 - Patton Kizzire (USA) 69-75-78-73, Maverick McNealy (USA) 73-71-78-73
297 - Robert MacIntyre (SCO) 70-71-80-76
298 - Sepp Straka (AUT) 71-72-79-76