Tommy Tolles fired an 8-under-par 64 to reach third place at 10-under par.
Wilson started on the second nine at the Jack Nicklaus Tournament Course, which along with the Stadium Course plays host to the six-round tournament. He birdied the 11th and 16th holes and added two more on the second nine for his second consecutive bogey-free round.
'I think I only found trouble on one hole, and I was able to make a par there so overall, I'm really happy,' said Wilson, who has played on the Japan Golf Tour the past two seasons. 'There are three more rounds to go, so you have to treat it just like any other tournament.'
Morgan flew out of the gate with six birdies in his first seven holes. He could have shared the top spot with Wilson but bogeys at two of his last four holes held him in second.
'I have done all right,' said Morgan, who has already secured his playing card for the 2003 European Tour. 'Today was a bit of a blur, really. I just hope I can keep it going. There is a long way to go still.'
Tolles kicked off his tournament with a 7-over 43 on the front nine at the Stadium Course on Wednesday but he has been on fire since. The PGA Tour veteran played the last 45 holes in 17-under par.
'It's just something about this course and my game that kind of gels together a little bit,' said Tolles. 'I really haven't put a big string of birdies together, but it just seems like I get off to good starts.'
Joel Kribel (67), Bobby Gage (70), Anthony Painter (72), Jeff Brehaut (72), Chris Anderson (66) and James McLean (67) share fourth place at 9-under par.
There is no cut in this tournament and the low-35 players and ties will receive their PGA Tour cards for 2003.
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