Stacy Lewis won the LPGA Founders Cup by three strokes on Sunday to jump to No. 1 in the world, taking advantage of Ai Miyazato’s collapse on the 16th hole in Phoenix.
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.
Lewis, who was victorious two weeks ago in Singapore, won for the seventh time in her LPGA Tour career to end Yani Tseng’s 109-week run at No. 1.
Lewis, who was forced to wear a back brace for six years as a teen because of scoliosis, 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.
Lewis, 28, closed with an 8-under-par 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 a 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.
Miyazato took a one-stroke lead into the 16th and was seemingly in perfect position after hitting in the middle of the fairway on the 307-yard hole. But her pitching wedge sailed left, hit on the bank near the edge of the green, and rolled into the desert bush.
Instead of playing again from the fairway, she elected to drop in sand in the desert, leaving her with an uphill shot with little green to work with. Hitting her fourth, her shot from the desert went to the far edge of the green and she two-putted for a double-bogey 6.
PGA — Kevin Streelman finally won on the PGA Tour with a game that looked as if he had done this many times before.
Streelman didn’t make a bogey over the final 37 holes on the tough Copperhead course at Innisbrook. He didn’t miss a shot over the last 11 holes on his way to a 4-under 67 for a two-shot win in the Tampa Bay Championship in Palm Harbor, Fla.
Boo Weekley, who teed off three hours before the leaders, had a tournament-best 63 and waited to see if that would be enough.
Streelman, locked in a battle with Justin Leonard over the final hour, came up with one clutch shot after another. He hit a 5-iron into 6 feet on the par-3 13th hole, the toughest at Innisbrook in the final round, to take the lead for good.
‘‘Probably the best shot of my life in that situation,’’ Streelman said. ‘‘It’s just how I envisioned it and I pulled it off.’’
He locked up the win with a 20-foot birdie putt on the par-3 17th and he was all smiles walking up the 18th fairway.
Streelman won in his 153d start on the PGA Tour, and it sends him to the Masters next month for the second time in his career.
He finished at 10-under 274.
The other big winner was Jordan Spieth, the 19-year-old from Texas who holed a 50-foot chip for birdie on the 17th hole and made a 7-foot par putt on the final hole for a 70 to tie for seventh. That gave him enough money to earn special temporary Tour membership for the rest of the year, meaning he can take unlimited sponsor exemptions.
Until making that chip, Spieth was projected to be $195 short of the temporary membership, which is based on earning the equivalent of 150th on the money list last year.
‘‘That would have been brutal,’’ he said with a grin. ‘‘That was one of the coolest shots I've ever hit. That was as loud as it gets. Hair on the back of your neck stands up. But yeah, if I was $200 short, I would have just asked if I could pay them $200.’’
The victory by the 34-year-old Streelman was the 14th consecutive win by an American in official PGA Tour events. Americans have won the first 12 events, their best streak since winning 13 in a row in 1989.
Champions — David Frost won the Toshiba Classic in Newport Beach, Calif., shooting a final-round 65 to defeat Fred Couples by five strokes, finishing at 19-under 194.