The Par-3 Contest at the Masters was canceled after thunderstorms at Augusta National forced a stoppage in play.
Phil Mickelson and U.S. Amateur champion Kelly Kraft finished at 3 under.
For Harrington, it is his third win in the contest. He won in 2003 along with David Toms, then defended his title in 2004.
Since its inception in 1960, the winner of the Par-3 Contest has never won the Masters in the same week.