Honda Classic, Round 1

1 of 8 David Walberg/SI
made five birdies and no bogeys for a 65.
2 of 8 David Walberg/SI
birdied No. 18 to finish with a four-under 66.
3 of 8 David Walberg/SI
fired a three-under 67.
4 of 8 David Walberg/SI
struggled to a two-over 72.
5 of 8 David Walberg/SI
made a birdie and two bogeys for a 71.
6 of 8 David Walberg/SI
made two double bogeys in his round of four-over 74.
7 of 8 David Walberg/SI
won't be defending his title this year. Yang opened with a nine-over 79.
8 of 8 David Walberg/SI
Holes 15, 16 and 17 are known as "The Bear Trap," three of the toughest holes on the course.