PATTAYA, Thailand: South Korea’s Amy Yang won the Honda LPGA Thailand in Pattaya on Sunday, finishing at 15-under-par 273 to hold off world No. 3 Stacy Lewis.

Yang struck a 3-under 69 to win by two strokes in the final round of the $1.5 million tournament at the Siam Country Club, seeing off Lewis who had led after each of the previous three rounds.

The US national tied for second place with Taipei’s Tseng Yani and South Korean Lee Mi-Rim — all finishing on 13-under.

“I don’t know what just happened,” Yang said after the final putt dropped, according to a statement released by the LPGA Tour organizers. “I still can’t believe I did it today.”

She and Lewis had been tied at the top of the leaderboard heading into number 15 when she secured a birdie after the American’s double bogey.

“I just kept focussing,” Yang said of her thoughts at that juncture with three holes still to go, eventually going on to secure the win.

The 25-year-old South Korean claimed her second LPGA victory with Sunday’s performance.

Her previous career tournament win was the LPGA KEB HanaBank Championship in 2013.

Yang has finished in the top five in three of the last four tournaments she has played in.

Ko cruises to New Zealand Open victory

World No. 1 Lydia Ko cruised to her second New Zealand Open championship crown in three years on Sunday after surviving a slight wobble midway through her final round.

New Zealander Ko, 17, carded a one-under par 71 Sunday after her course record 61 on Saturday and finished on 14-under 202, four strokes clear of Australian amateur Hannah Green who shot a last-day 68.

Denmark’s Nanna Koerstz Madsen was a further shot adrift in third at the Clearwater Golf Club in Christchurch.

The victory means Ko will retain her No 1 world ranking after back-to-back wins Down Under following her LPGA Tour Australian Open triumph in Melbourne a week ago.

Ko was five shots clear midway through her round until a double-bogey six at the eighth hole and a bogey at the short ninth threatened to derail her. But the teenager steadied matters with birdies at the 10th and 12th to go five shots ahead.

Playing partner Charley Hull of England, who started the day three shots back, faded badly after the turn with three bogeys and a double in her last seven holes to finish in a tie for sixth, seven shots behind Ko.