Wilson had 14 one-putts in 32 holes Thursday and beat Todd Mitchell 5 and 4 in the 36-hole final at the Milwaukee Country Club.
My caddie kept giving me great read after great read, Wilson said. He read it. I just get over and it hit it where he says.
The 38-year-old Wilson, reinstated as an amateur in 2005 after almost 10 years as a professional, owns two gas stations in Ocean Springs, Miss., with Gary Martin, his caddie and business partner.
If you talk to people I play golf with a lot, theyll tell you Im the worst putter theyve ever seen, he said. Today just seemed like my day.
The 30-year-old Mitchell, a former Yankees farmhand who is now an insurance agent in Bloomington, Ill., struggled with putting and errant tee shots.
I didnt hit too many quality shots, Mitchell said. I made some putts but I missed some timely ones, Mitchell said.
With the victory in the event for players 25 and older, Wilson earned a probable invitation to the 2009 Masters.
This is like hitting the lottery for me, said Wilson, who has never been to Augusta National. I never believed I could win anything this big.