Ryo Ishikawa shot a 4-under 68 on Sunday to claim a narrow 1-stroke victory at the Taiheiyo Masters.

The 21-year-old Ishikawa entered the final round with a 1-shot lead and finished at 15-under 273 to pick up his first victory since winning this event in 2010.

Michio Matsumura also fired a 68 on Sunday but couldn't overtake Ishikawa and ended one stroke off the pace in second at 14-under.

Yoshinori Fujimoto took third at 12-under, Hideki Matsuyama and Han Lee tied for fourth at 11-under and Hiroshi Iwata finished one shot back in sixth.