|Justin Rose hangs on to defeat K.J. Choi. (Getty Images)|Russell Henley defeats Charl Schwartzel 1 up
How it ended: This was the match of the day to me so far. Neither player gave much to the other as Henley won five holes and Schwartzel four. Schwartzel needed a birdie from the bunker on No. 18 to extend things. Needless to say, he didn't get it (and my bracket is shot).
Nicolas Colsaerts defeats Bill Haas 5 and 4
How it ended: Haas only won one hole en route to getting drilled by Colsaerts. Colsaerts will face Justin Rose in the next round.
Justin Rose defeats K.J. Choi 2 and 1
How it ended: This one was all over the place. Rose was actually 4 up thru five before Choi tied it on the 12th hole. Rose went back up on No. 15, and it ended on No. 17, where Choi hit it in the desert, couldn't get up and down, and conceded.
Here's what Rose had to say about the match on Golf Channel:
I felt edgy and nervous all through that back nine but managed to pull out the putt I really needed on No. 15.
Thorbjorn Olesen defeats Jamie Donaldson 3 and 2
How it ended: My sleeper! Olesen never trailed. The sneaky 10-seed will face Tim Clark in Round 2.
Richard Sterne defeats Jason Dufner 1 up
Dufner missed a short putt on No. 17 that would have knotted things. He was actually four down thru 11 and won three of the next five holes, but it wasn't enough. Sterne will face defending champ Hunter Mahan in the second round.
Tim Clark defeats Adam Scott 2 and 1
How it ended: Battle of the belly putters! Scott missed a 6-foot par putt on No. 17 to fall to Clark. The 15th-seeded Clark will take on 10th-seeded Olesen in the second round.
Here's what Clark had to say about beating his friend:
That was probably the most nervous I've been in a long, long time on a golf course.
Bubba Watson defeats
Chris Wood 2 and 1
How it ended: Watson hit an insane approach on No. 17 to within a foot for the concede and win. He will face Jim Furyk in the second round.
Jim Furyk defeats Ryan Moore 4 and 2
How it ended: Furyk went on a run starting on No. 8 and took four consecutive holes to give him a 4-up lead. Moore took No. 12, but Furyk ended him on No. 15 with an up and down from just shy of the green.