First Round of the Arnold Palmer Invitational

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First Round of the Arnold Palmer Invitational Fred Couples, who opened his round with birdies on the first two holes, is tied for the lead at five under par.
2 of 11 Joe Kaleita/AP
Tom Lehman's first-round 66 left him at four under par.
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Charles Howell had a rough day with five bogeys on his scorecard. He is at five over par.
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Ken Duke had three straight birdies on the back nine. He finished at three under par.
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Phil Mickelson is two over par after a first-round 72.
6 of 11 Joe Kaleita/AP
Lee Westwood was also one stroke behind Couples. He shot a first-round 65.
7 of 11 Joe Kaleita/AP
Vijay Singh started his day off with a bogey, but five birdies left him one stroke off the lead.
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J.J. Henry, who is tied for the lead with Couples, had a bogey-free round of 65.
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Tiger had two bogeys and two birdies to finish at even par.
10 of 11 David Walberg/SI
Tiger Woods shot a first-round 70.
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Boo Weekley, who is six strokes off the clubhouse lead, shot 71.