Jason Dufner matched playing partner Zach Johnsonís birdie putt on the 17th hole, then overcame a wayward final tee shot to save par and keep the lead at the Colonial in Fort Worth, Texas.
Slowed by two late bogeys, Dufner shot a 4-under 66 in the third round for a 15-under 195 total.
That put him a stroke ahead of Johnson, who shot 65 to set up what could basically be a match-play final group today for the winnerís plaid jacket. Tom Gillis was a distant third at 7 under after a 69.
Dufner, the winner last week in the Byron Nelson Championship about 30 miles away, is trying to win for the third time in five weeks. He also is trying to do something only Ben Hogan has done.
Hogan, Dufnerís hero, is the only player to win both PGA Tour events in the Dallas-Fort Worth area in the same year. When he did it in 1946, they werenít played in consecutive weeks.
The last player to win in consecutive weeks on the PGA Tour was Tiger Woods in 2009. Nobody won more than two tournaments last season.
Bo Van Pelt had his streak of 13 subpar rounds in a row at Hoganís Alley end with a 71. He was fourth at 204.
Roger Chapman shot a 7-under 64 to take a 5-stroke lead into the final round of the Senior PGA Championship in Bent Harbor, Mich.
Chapman finished the day at 14-under par. John Cook began the round tied with Chapman for the lead, but couldnít keep pace with the Englishman and settled for a 69 to drop into second place at Harbor Shores.
Chapmanís 54-hole score of 199 tied the tournament record set by Sam Snead in 1973, although Snead was 17 under when he set the mark. Steve Pate had a 67 to join 66-year-old Hale Irwin at 7 under. Irwin made a triple bogey on the par-3 fourth, but played well on the back nine and shot 69.
Chapman beat Padraig Harrington in a playoff to win a European Tour event in Brazil in 2000, and thatís pretty much the highlight of his resume. He has never won on the Champions Tour. He made the cut in all 11 of his Champions Tour starts last year, but didnít have a top-10 finish.
Heíll have one more challenge this weekend, the final round Sunday, when the temperature is expected to reach 90 degrees.
The 53-year-old Chapman came to Harbor Shores after tying for 16th a couple weekends ago at the Mallorca Open ó the European Senior Tourís lone event so far this season.
Chapman began to pull away from the field on the front nine Saturday. While Irwin was making a six on No. 4, Chapman rolled in his second birdie of the day to move to 9 under.
Luke Donald moved to the brink of a second successive BMW PGA Championship title and reclaiming the top ranking by shooting a 3-under 69 to take a 2-stroke lead after the third round in Virginia Water, England.
Donald overcame tough, windy conditions at Wentworth to be one of only three players to break 70 on a day of high scoring that led course designer Ernie Els to criticize European Tour officials for the state of the greens.
Donaldís fellow Englishman Justin Rose (69) was alone in second at 9 under while Peter Lawrie of Ireland (72) was 2 shots further back at 7 under.
ďPhysically and mentally, it was tough out there and itís going to be a grind tomorrow,Ē said Donald, who would become only the third player ó after Nick Faldo and Colin Montgomerie ó to defend the title here.
He needs to finish in the top eight to retake No. 1 from Rory McIlroy, who missed the cut for the second tournament in a row after a 79 on Friday.
Englandís James Morrison started the day with a 4-shot lead on 12 under but made two 8s ó one triple bogey and one quadruple bogey ó on his way to an 81 to fall 8 shots off the pace.