Round 1 at the Valero Texas Open

1 of 7 Eric Gay/AP
J.J. Henry shot a bogey-free 67 in his opening round.
2 of 7 Darren Carroll/Getty Images
Jhonattan Vegas fired a 68 to put himself near the top of the leaderboard early.
3 of 7 Darren Carroll/Getty Images
Vegas, a PGA Tour rookie, is looking for his second win of the season.
4 of 7 Darren Carroll/Getty Images
Mike Weir continued his poor play of late with a 79 on Thursday.
5 of 7 Darren Carroll/Getty Images
Fredrik Jacobson shot a 72.
6 of 7 Darren Carroll/Getty Images
James Driscoll struggled to a two-over 74.
7 of 7 Eric Gay/AP
Kevin Na got a 15 on the ninth hole after his third drive found the woods.