Tambellini finished a tournament-record 20 under at 265, overcoming a double bogey on the sixth hole with six birdies in the final round on the Georgian Bay Club course. Adams shot a 69 and Craig Barlows 66 left him third, at 15 under.
It all came together for me this week, Tambellini said while receiving a standing ovation from fans overlooking the 18th green. Thats what has to happen for any champion.
D.J. Brigman (65), Chris Anderson (69) and Garth Mulroy (73) were tied at 14-under 271.
Tambellini pocketed a career-best $144,018, jumping from 17th to third on the money list. The top 25 at the end of the season earn PGA Tour cards for 2010. The former Southern California golfer followed each of his previous wins with full seasons on the PGA Tour in 2004 and 2006.
Tambellini had birdies on two of his first four holes, but a bogey on the fifth and a double bogey on the sixth shrank his lead to one shot.
The double bogey derailed me mentally, he said. It took me a while to get the feeling back that I had on Thursday when I shot 64.
After he made birdie on four of the next nine, though, he could come home with a comfortable lead, even hitting a 3-wood off the tee on the par-5 18th.
NOTES: Gretzky finished second in the Pro-Am, with Derek Gilliespie. Former Candian Olympic speed skater Catriona Le May Doan and Derek Lamley won in a scorecard playoff at 42 under. The first two rounds alternated between the 7,139-yard, par-71 Georgian Bay course and Raven Golf Club at Lora Bay (7,105 yards, par 72). The final two were played at Georgian Bay.