McIlroy's hopes had evaporated by the midway point in his second round, when he endured a spell of seven dropped shots in six holes from No. 8 to No. 13. He looked sullen and his shoulders dropped as he walked along the fairways contemplating a second straight missed cut, having succumbed to the same fate at the Players Championship two weeks ago.
It revived memories of his infamous meltdowns at last year's Masters and at the 2010 British Open, when he shot 80 both times. It was the first time in more than two years that McIlroy has failed to make the weekend at two consecutive tournaments, giving Donald a great opportunity to replace him as No. 1.
"I might have taken my eye of the ball a little bit," McIlroy said. "Maybe just haven't practiced as hard as I might have been. . . . It's a week I'd like to forget."
FORT WORTH, Texas - Jason Dufner moved into position for his second straight victory and third in five weeks, shooting a bogey-free 6-under 64 to take a 2-stroke lead in the Colonial.
The Byron Nelson Championship winner last week, Dufner had an 11-under 129 total at Hogan's Alley. First-round leader Zach Johnson was second after a 67, and Bo Van Pelt and Tommy Gainey were third at 7 under. Defending champion David Toms missed the cut, shooting 74-71.
The only player to win both PGA Tour events in the Dallas-Fort Worth market in the same year was Ben Hogan in 1946. Both of Dufner's PGA Tour victories came in his previous three starts.
BENTON HARBOR, Mich. - Hale Irwin shot his age with a 5-under 66, finishing the second round of the Senior PGA Championship 2 shots behind leaders Roger Chapman and John Cook.