HUMBLE, Texas (AP) - Phil Mickelson is among the leaders after shooting a bogey-free 4-under par 68 in his opening round of the Houston Open, showing no effects of the muscle pull that forced him to withdraw from last week's Texas Open.
The five-time major winner, who practiced at Augusta National for two days this week in advance of the Masters, is three shots back of leaders Bill Haas and Charley Hoffman - both who shot 7-under 65.
Keegan Bradley and Matt Kuchar lead a group of five golfers at 6 under after Thursday's play.
Former world No. 1 Rory McIlroy, playing in the afternoon on the 7,441-yard Golf Club of Houston, finished with a 2-under 70- five shots back of the lead. World No. 10 Dustin Johnson withdrew after an 8-over 80.