Barry Cheesman, Mike Grob, Bobby Gage, Matthew Goggin and Donnie Hammond are tied for fourth at 7-under-par 137.
'It's the first time that I have ever really gotten off to a good start. I've never had a chance at the finals,' said Wilson. 'I have just always put myself in position to be at the back of the pack so I am glad to have a good start and we have four more days so we are only one third of the way through.'
Wilson has spent time playing in Japan where he has won six times in the last three years on the Japan Golf Tour.
'It's really helped me a lot just because I have had a place to play,' said Wilson. 'I have been able to put myself in position to win tournaments and I have won some tournaments over there. I don't think it matters where you are, you are going to win a tournament whether it is the U.S. Open, a PGA Tour tournament or in Japan.'
Brehaut collected five birdies on the front side of the Stadium Course and added another at the par-4 12th. He bogeyed the 15th but responded with three consecutive birdies en route to a 64.
'I think that is my best round of the year right there,' said Brehaut. 'Pretty good timing on a pretty hard golf course.'
Andy Miller, son of television analyst Johnny Miller, posted a 4-under 68 to finish four shots off the pace at 6-under-par 138. Miller was joined by Mark Hensby and Jeev Singh in a tie for ninth.
David Sutherland, Jeff Hart, Ted Purdy, Sonny Skinner, John Morgan, Bob May, Ken Duke, John Elliott, Ben Curtis, Todd Rose and John Maginnes share 12th at 5-under-par 139.
Play will be contested at both the Stadium Course and the Nicklaus Course throughout all six rounds of the tournament. There is no cut and the low 35 players and ties will receive their PGA Tour cards for 2003.
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