Zach Johnson now has a plaid jacket to go along with his green one.

Johnson shot a closing 6-under 64 Sunday in the final round of the Colonial, winning at Hogan's Alley with a tournament-record score of 21-under 259. The 2007 Masters champion finished three strokes ahead of Brian Davis, who had a closing 68.

When Johnson drained a 14-foot birdie putt at the 17th hole to take a two-stroke lead, he had a wide smile on his face and emphatically pumped his right fist.

The real celebration had to wait.

Before Johnson teed off for his par at the closing 18th, play was suspended for the second time in less than an hour because of threatening weather. Light rain was falling despite sunny skies after the second delay of 46 minutes, a minute shorter than the first one.

Jeff Overton and Ben Crane both shot 67 to finish tied for third at 17 under. Scott Verplank (65) and Bryce Molder (70), who led after the second and third rounds, were another shot back.

Mike Weir of Bright's Grove, Ont., and Weyburn, Sask., native Graham DeLaet finished tied for 33rd place at nine under...

Zach Johnson wins Colonial