SAN MARTIN, Calif. — Jimmy Walker finally won on the PGA Tour in his eighth year and 188th tournament, and with a little help from Brooks Koepka.Tied for the lead with four holes to play Sunday, Walker rolled in a 6-foot birdie putt on the 15th hole to take the lead for good in the Frys.com Open. Three closing pars for a 5-under 66 turned out to be more than enough for the 34-year-old San Antonio resident and former Baylor standout to take home a trophy and plenty of perks. Walker is going to the Masters for the first time, along with a trip to Maui for the Tournament of Champions. He also cracked the top 50 for the first time in his career. “I think it will sink in after a while,” Walker said. “Relief right now. It feels really good. I’m pretty excited.” It was a sinking feeling for Koepka, whose journey around the world in a remarkable year nearly ended with a PGA Tour card. Koepka missed a 6-foot putt on the 15th that would have matched birdies with Walker, who was playing in the group ahead of him. Down to his last shot, he hit into the water on the 297-yard, par-4 17th for bogey. “Things weren’t going my way,” Koepka said. “I didn’t make the shots I needed to win. Congrats to Jimmy on that.”LPGA MalaysiaAmerican teenager Lexi Thompson shot a 2-under 69 on Sunday to comfortably win the LPGA Malaysia by four strokes. The 18-year-old, who won her second career LPGA title and first of the season, finished at 19-under 265 to end the South Korean dominance at the Kuala Lumpur Golf and Country Club. “Words can’t even describe the feeling I have right now,” Thompson said.China’s Feng Shanshan was second at 269 after carding a 67.Briefly• European Tour: Englishman David Lynn shot an 8-under 63 to rally from six shots back and win the Portugal Masters in Vilamoura, ending a nine-year wait for his second European Tour title.• Champions Tour: Russ Cochran holed a 5-foot putt on the final hole for his fourth straight birdie and a one-stroke victory over David Frost in the SAS Championship in Cary, N.C.• China Masters: South Africa’s Charl Schwartzel won the China Masters, closing with a 4-under 68 for a one-stroke victory over Darren Clarke and 2012 winner Liang Wenchong.