Andy Mickelson wins PGA Assistant Championship (The Associated Press)

PORT ST. LUCIE, Fla. (AP) -- Andy Mickelson won the PGA Assistant Championship on Sunday, closing with a 1-under 71 for a two-stroke victory on PGA Golf Club's Wanamaker Course.

The 34-year-old Mickelson is a PGA apprentice at Mistwood Golf Club in Romeoville, Illinois. He finished at 16-under 272 after shooting 68-65-68 to take a two-stroke lead into the final round.

''The biggest win I have ever had. It is just surreal,'' Mickelson said. ''I am having trouble fathoming this, to be honest. All week, I was in the mindset of 'shot-to-shot.' I did not get ahead of myself. I just kept my head down.''

Adam Rainaud of South Hadley, Massachusetts, was second after a 71.

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