Round 1 at 2012 HP Byron Nelson Championship

1 of 7 Tony Gutierrez/AP
Phil Mickelson shot an even-par 70 in the first round of the Byron Nelson.
2 of 7 Tony Gutierrez/AP
Mickelson's round featured two birdies and two bogeys.
3 of 7 Darren Carroll/Getty Images
Ryan Palmer shot a six-under 64 to take the lead.
4 of 7 Tony Gutierrez/AP
Padraig Harrington had reached five under before making double bogey at the par-4 12th. He finished at two under.
5 of 7 Tony Gutierrez/AP
Matt Kuchar fired a four-under 66 to get within two shots of leader Ryan Palmer.
6 of 7 Brandon Wade/AP
Defending champ Keegan Bradley shot a 67.
7 of 7 Brandon Wade/AP
Rory Sabbatini struggled to a five-over 75.