Shell Houston Open 2013, PGA Tour

1 of 32 Scott Halleran/Getty Images
Phil Mickelson moved into contention Saturday with a five-under 67.
2 of 32 Scott Halleran/Getty Images
Mickelson is five shots back heading into the final round.
3 of 32 Scott Halleran/Getty Images
Rory McIlroy got off to a hot start, but he bogeyed three of the last six holes for a 71.
4 of 32 Scott Halleran/Getty Images
"Everything feels good in my game," McIlroy said. "It's just about playing a bit more competitive golf and just getting a little sharper."
5 of 32 Scott Halleran/Getty Images
Bill Haas fired a five-under 67 to grab a share of the lead.
6 of 32 Scott Halleran/Getty Images
Stewart Cink is also tied for the lead after a four-under 68.
7 of 32 Scott Halleran/Getty Images
Steve Wheatcroft dropped out of the lead with a bogey on 18.
8 of 32 Scott Halleran/Getty Images
Jason Kokrak is one shot back after a one-under 71.
9 of 32 Scott Halleran/Getty Images
Louis Oosthuizen shot a bogey-free 65 to finish at nine under par.
10 of 32 Scott Halleran/Getty Images
Rory McIlroy shot a two-under 70 to make the cut on the number.
11 of 32 Scott Halleran/Getty Images
McIlroy committed to next week's Texas Open late on Friday in order to get ready for the Masters.
12 of 32 Scott Halleran/Getty Images
Phil Mickelson also made the cut on the number.
13 of 32 Scott Halleran/Getty Images
Mickelson is using a new oversized grip on his putter this week. He's also stopped using the claw grip.
14 of 32 Scott Halleran/Getty Images
Steve Wheatcroft, who Monday qualified to get into the field, leads by one heading into the weekend.
15 of 32 Scott Halleran/Getty Images
Dustin Johnson is five back after a two-under 70.
16 of 32 Scott Halleran/Getty Images
Keegan Bradley made four birdies and two bogeys for a 70.
17 of 32 Scott Halleran/Getty Images
D.A. Points is one shot off the lead after a one-under 71.
18 of 32 Scott Halleran/Getty Images
Bud Cauley made two double bogeys in his round of two-over 74.
19 of 32 Scott Halleran/Getty Images
Rory McIlroy got off to a slow start in the first round of the Shell Houston Open, shooting a one-over 73.
20 of 32 Scott Halleran/Getty Images
McIlroy made bogey at the second and double bogey at the eighth.
21 of 32 Scott Halleran/Getty Images
With a win this week, he could reclaim the No. 1 ranking.
22 of 32 Scott Halleran/Getty Images
McIlroy's wild shot on the second hole came to rest on a cart path.
23 of 32 Scott Halleran/Getty Images
Phil Mickelson struggled to an opening-round 72.
24 of 32 Scott Halleran/Getty Images
Mickelson is looking to round out his game in time for the Masters in two weeks.
25 of 32 Scott Halleran/Getty Images
D.A. Points shot an eight-under 64 to take the lead.
26 of 32 Scott Halleran/Getty Images
Keegan Bradley got off to a good start and finished with a 70.
27 of 32 Scott Halleran/Getty Images
Boo Weekley shot a 70 in the first round.
28 of 32 Scott Halleran/Getty Images
Lee Westwood opened with a solid 68.
29 of 32 Scott Halleran/Getty Images
Hunter Mahan shot a two-over 74.
30 of 32 Scott Halleran/Getty Images
Ryo Ishikawa struggled on day one.
31 of 32 Scott Halleran/Getty Images
Cameron Tringale was one back after a 65.
32 of 32 Scott Halleran/Getty Images
John Merrick shot a 68.