MARANA, Ariz. -- Big-hitting American Robert Garrigus, a No. 9 seed, upset Louis Oosthuizen, the top seed in the Hogan bracket, 3 and 2 in the second round.
With the earlier loss of Luke Donald to Scott Piercy, all four No. 1 seeds have now been eliminated. Rory McIlroy and Tiger Woods lost in the first round.
Garrigus said he never felt like an underdog to Oosthuizen, despite the seeding.
"I felt like I was playing better than anybody coming in here, so whatever seed it was didn't matter," Garrigus said.
Garrigus indeed has been putting well this week, having needed just 47 puttsin the first two rounds. On Friday, he had eight birdies on his round, with four birdies putts coming between 7 and 11 feet. He now has 14 birdies through the first two rounds.
"I looked at all the guys in my bracket and I was like, 'I can beat him, I can beat him and I can beat him,' " Garrigus said. "If I'm putting well, I'm going to be hard to beat."
Garrigus won the first two hole but the match was all square through eight, as Oosthuizen played a bogey-free 2 under for the first eight holes.
But from there, Garrigus was a bogey-free 4 under in the final eight holes and Oosthuizen could not keep pace.
SCORECARD STATS: Garrigus carded eight birdies and two bogeys. Oosthuizen carded four birdies and one bogey.
HOLES WON: Garrigus won five holes. Oosthuizen won two holes.
NEXT OPPONENT: Garrigus plays Fredrik Jacobson in the third round of the Hogan bracket.