Jason Dufner bombs in putt at Colonial to force likely playoff with Adam Scott

It's been a rough year for the bigger names on the PGA Tour, but at the Crowne Plaza Invitational, it appears we're headed for a two-man playoff between the world No. 1 and the reigning PGA champion.

The leaderboard at Colonial is so bunched up that Jimmy Walker just had a putt that would have been the difference between a fifth place finish and a 10th place result. It's been a manic Sunday with a revolving door of leaders at the top of a clustered board, but as things wind down, it appears we're heading for an Adam Scott and Jason Dufner playoff.

That's about as good as the folks of the Crowne Plaza Invitational could have hoped for, with the new world No. 1 and two of last year's major champions going to extra holes. Scott was flirting all day with dropping out of his No. 1 spot -- he needed a top 13 finish to keep Henrik Stenson from ending his reign at the top of the world rankings after just one week.  After a double bogey at the ninth, it looked like Scott's shot at a win was over but the Aussie regrouped for an inward 32 to get back to the lead at 9-under.

Dufner was another early charger, and probably should have posted a number better than 66 but missed a couple short putts and burned the edges on a few others. His irons, as usual, were all over the flagstick all day but he couldn't get the birdies to drop on the back nine. Then came the 18th, and the reigning PGA Champion poured one in from about 25 feet. It got Jim Nantz all lathered up for a peak "Yes!" call. That looks to be enough to lock up a spot for extra holes with Scott. 

David Toms is the one player left on the course who could make a run and join that two-man party at 9-under. But thanks to Dufner's putt, it looks like we'll wait about an hour for a playoff.

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