Kuala Lumpur - Pat Perez fired three-under-par 69 Sunday to win the CIMB Classic in Malaysia by four strokes, firmly eclipsing two-time defending champion Justin Thomas to win just his third career title.
Perez finished with an aggregate score of 264 at par-72 TPC Kuala Lumpur, ahead of second-placed Keegan Bradley with Xander Schauffele and Kang Sung-Hoon seven off the pace in joint third.
Perez ended a seven-year trophy drought at last year's OHL Classic and now, in his 403rd start on tour, the 41-year-old becomes the CIMB's oldest winner.
But there was disappointment for Thomas, the PGA Championship title-holder and 2017 PGA Tour Player of the Year, who finished tied for 17th despite a 67 in the final round of his title defence.
Perez, who shot rounds of 66, 65, 64 and 69, relished his latest victory, particularly as he did not play for months at the start of 2016 while recovering from shoulder surgery.
"I was so excited to come back after, you know, being out for so long," he said.
In sweltering conditions, Perez, who led since Friday's second round, birdied three of the first four holes on Sunday to maintain his four-shot overnight lead.
Perez gets the $1.26 million prize purse and 500 FedEX Cup points for his win. The $7 million CIMB Classic is co-sanctioned by the PGA Tour and Asian Tour.
Final-round scores in the CIMB Classic in Kuala Lumpur on Sunday (par 72):
264 - Pat Perez (USA) 66-65-64-69
268 - Keegan Bradley (USA) 65-71-65-67
271 - Xander Schauffele (USA) 65-67-67-72, Kang Sung-Hoon (KOR) 67-68-65-71
272 - Cameron Smith (AUS) 64-71-73-64, Hideki Matsuyama (JPN) 70-68-63-71
274 - Danny Lee (NZL) 73-65-68-68, Paul Casey (ENG) 77-63-69-65, Lucas Glover (USA) 71-67-68-68
275 - Rafa Cabrera Bello (ESP) 67-70-69-69, Peter Uihlein (USA) 73-68-65-69, Anirban Lahiri (IND) 67-73-64-71
276 - Nick Taylor (CAN) 70-74-67-65, Luke List (USA) 70-70-68-68, Brendan Steele (USA) 67-71-70-68, Stewart Cink (USA) 72-68-67-69
277 - Chez Reavie (USA) 68-74-69-66, Camilio Villegas (COL) 72-68-70-67, Justin Thomas (USA) 70-71-69-67, C.T.Pan (TPE) 70-70-69-68
278 - Kyle Stanley (USA) 71-67-70-70, David Lipsky (USA) 69-71-68-70