Paul Devenport is at 5-under through 11 holes as darkness forced the suspension of the first round. There were two weather delays that stopped play for almost four hours.
The biggest story of the round was 13-year-old amateur sensation Michelle Wie, who posted a 2-over 74 on Thursday.
The reigning U.S. Women's Amateur Public Links became the third woman in 2003 to play in a men's event, joining Annika Sorenstam, who played the Colonial on the PGA Tour and Suzy Whaley, who qualified for the Greater Hartford Open.
'I think I played good but I could have played a lot better,' said Wie. 'I made two stupid bogeys and that killed me. A couple of holes my driver worked really well, and a couple of holes my putter worked really well. It wasn't like one thing worked extremely well the whole day.'
Wie performed in front of large galleries Thursday and was asked about the pressure of playing in front of so many.
'I was too sleepy this morning to be nervous,' joked Wie. 'I have to sleep a lot. But I'm really glad the other guys were nice to me. I didn't feel like I was the only girl in the competition. They seemed to welcome me.'
Harris played in the group in front of Wie on Thursday and did not seem fazed by the hoopla.
'I'm just trying to play it low key this week,' said Harris, who is fourth on the Canadian Tour Order of Merit. 'To me, it's another golf tournament and I'm just going to try to have some fun.'
Harris birdied the eighth hole to kick off a run of three straight birdies. If he can hold on and visit the winner's circle Sunday afternoon, he would surely move to No. 1 on the money list and earn an exemption into the second stage of PGA Tour Qualifying School later this year.
'You can't win a golf tournament on the first day, but you can certainly shoot yourself in the foot and take yourself out of one,' said Harris. 'Getting one of those two exemptions is one less thing to chance (bypassing first stage), but if I don't get it, I'll just have to do what I have done the past two years and play my way through first stage.'
Rodney Butcher and Doug McGuigan are in third place at 3-under-par 69, while Derek Gillespie is 3 under par through 12 holes.
Brad Sutterfield, Chris Wall, Bryan Wright, Daniel DeLeon, Danny Pannaccia and Alex Quiroz share sixth place at 2-under-par 70.