Round 1 at the Colonial

1 of 5 Scott Halleran/Getty Images
made two birdies on on the front nine and then notched two more on the back for an opening 66.
2 of 5 Scott Halleran/Getty Images
had three front-nine birdies along with one costly double-bogey. He bogeyed two of his final three holes to finish with a 1-over 71.
3 of 5 Scott Halleran/Getty Images
reeled off eight birdies before making a bogey on the 18th to finish at 7-under 63.
4 of 5 Scott Halleran/Getty Images
made his return from a shoulder injury to record four birdies and two bogeys for a two-under 68.
5 of 5 Scott Halleran/Getty Images
and the rest of the field had to sweat out temperatures in the mid 90s for most of the day.