NEWPORT BEACH, Calif. —David Frost won the Toshiba Classic on Sunday, shooting a final-round 65 to defeat Fred Couples by five strokes and tie the tournament record of 19-under 194 set by Jay Haas in 2007.
Frost joined 2011 winner Nick Price as the only golfers to lead wire-to-wire in the event’s 19 years. It was his fourth career Champions Tour victory and first since last year’s AT&T Championship in San Antonio.
In four events this season, Frost hasn’t finished out of the top 10, posting ties for ninth, fifth and losing in a playoff to John Cook in Hawaii in the season-opening Mitsubishi Electric Championship.
Couples, the 2010 champion, began the day a stroke behind Frost and tied him after a birdie on the first hole. That was the last time Frost would relinquish the lead. He birdied the second and third hole to build a two-shot advantage and the lead never went lower than one the rest of the round.
After making a birdie on No. 10 Couples had a chance to tie Frost again, but made a bogey two holes later and never recovered. Couples battled back pain for most of the day, especially on the back nine. After hitting an approach shot on No. 16 Couples dropped the club and bent over in obvious discomfort.
Jay Haas, the 2007 winner, finished tied for third with Peter Senior at 11 under. Tom Watson finished fifth another stroke back and Champions Tour rookies Rocco Mediate and Esteban Toledo tied for sixth at 9 under.
LPGA TOUR: In Phoenix, Stacy Lewis won the Founders Cup to jump to No. 1 in the world, taking advantage of Ai Miyazato’s collapse on the 16th hole.
A day after Lewis was penalized two strokes for her caddie’s blunder on the short par 4, the American took a two-stroke lead with a birdie on the hole after Miyazato made a double bogey following an errant approach shot that left her with an unplayable lie in a desert bush.
Coming off a victory two weeks ago in Singapore, the 28-year-old Lewis won for the seventh time in her LPGA Tour career to end Yani Tseng’s 109-week run at No. 1.
Lewis closed with 8-under 64 in perfect conditions at Desert Ridge to finish with a tournament-record 23-under 265 total on the cactus-lined Wildfire layout.
Miyazato finished second, three strokes back after 71.
The Japanese star took a four-stroke lead over Lewis and Jee Young Lee into the final round when Lewis was penalized after play Saturday when it was ruled that caddie Travis Wilson tested the sand before Lewis played out of a bunker on No. 16.
Forced to wear a back brace for six years as a teen because of scoliosis, Lewis is the second American to top the ranking that began in 2006. Cristie Kerr was No. 1 for five weeks over three stints in 2010.
EUROPEAN TOUR: In Bangkok, Prayad Marksaeng shot a final-round 64 for a total of 24-under 264 to win the Thailand Open.
The 47-year-old Thai, who was runner-up here in 2011, trailed Lucas Lee of Brazil by three strokes at the start of the day but sank nine birdies against just one bogey to beat Scott Strange of Australia by two strokes. Strange hit a 67 in the final round of the Japan Tour event.
Marksaeng became the first Thai to win the tournament since Boonchu Ruankit in 2004.
Nick Cullen shot 65 to secure third place.
Marksaeng said he had “no pressure from start knowing I was not among the leaders. I started very well and just kept my momentum going.”