Round 2 at 2011 Shell Houston Open

1 of 6 Michael Cohen/Getty Images
made eight birdies and no bogeys to finish one shot behind leader Chris Kirk.
2 of 6 Michael Cohen/Getty Images
made three birdies, three bogeys and one eagle for a 2-under 70.
3 of 6 Michael Cohen/Getty Images
shot even par despite struggling with a bad back.
4 of 6 Michael Cohen/Getty Images
made four birdies and four bogeys on Friday.
5 of 6 Michael Cohen/Getty Images
is tied for second after a bogey-free 67.
6 of 6 Michael Cohen/Getty Images
shot a 1-under 71.