South Korea's Na Sang-wook, also known as Kevin Na, tied for second place on Monday in the U.S. PGA's FBR open held in Scottsdale, Arizona.

Masters Champion Phil Mickelson took the tournament's victory, his first of the year, winning by a five-stroke triumph of 19-under that was the biggest winning margin in his PGA Tour career.

Na, the youngest player on the PGA tour at 21, tied with Scott McCarron at 12-under 272. Na played in the final group with Mickelson and faltered before rallying with birdies on the 14th and 17th holes.

Another prominent South Korean golfer Choi Kyung-ju finished at 11th place with 7-under 277.