PUNTA CANA, Dominican Republic -- Tony Romo figured his weakness would be exposed in his PGA Tour debut. They were -- and then some.

The former Dallas Cowboys quarterback finished last Friday in the 132-man field in the Corales Puntacana Resort and Club Championship, bogeying the first six holes in a 10-under 82.

"I kind of have an idea of where I really need to put my time in, as far as to get better and scoring,'' Romo said. "I'm hitting the ball fine. You just have to score.''

Now an NFL analyst for CBS Sports, Romo opened with a 77 on Thursday. At 15 over, he was six shots worse than the next player on the leaderboard and 28 strokes behind leader Brice Garnett.

On Friday, Romo followed the opening bogey run with a double-bogey on the par-4 18th. He birdied the par-5 fourth and par-4 sixth on the second nine but had double-bogeys on the par-3 second and par-4 fifth.

"I lipped out three or four putts early, some short putts that kind of got me almost a little bit pressing,'' Romo said. "I just didn't hit the irons very good today. The back nine's 4,000-some yards, so when you're not hitting those, well, you're going to have tough shots.

"Short-sided a few times, made too many mistakes. So a lot of stuff to learn from, and in a good way. I'll be able to kind of assess why I didn't play as well as I wanted to, and then you go attack it. In a month from now, I think we'll see things a little better.''

Romo received a sponsor's exemption to the tournament and played as an amateur. The event has one of the weaker fields of the year because it is held opposite the World Golf Championships event in Texas.

"The putting's a big thing,'' Romo said. "I could see that you can tell that the speed control, a lot of little things. We hit the ball fine. We're going to be fine with contact, I don't feel out of place with that. I just feel like a lot of little stuff. I'll tug an iron on a hole that you really can't because you're going to be downwind short-sided and you're making a double.''

Garnett followed his opening 63 with a 68 to get to 13-under 131.

"There's so much golf left, 36 holes, and especially out here, guys are going to make charges from way back,'' Garnett said. "A lot of birdies are out there. So I'll just keep my head down, keep plugging and try to have a solid weekend.''

Steve Wheatcroft and Keith Mitchell were a shot back, each after their second 66. Seungsu Han (67) and Xinjun Zhang (68) were 10 under. Hunter Mahan (65) topped the group at 9 under, and Geoff Ogilvy (67) was 8 under.