Wednesday kicked off the 2012 Accenture Match Play Championship tournament in Marana with few unexpected upsets.
Last year's champion, England's Luke Donald, lost to South Africa's Ernie Els 5 and 4.
"I am not sure where to start," Donald said about his loss in a press conference after the tournament. "I just didn't play very well. It's disappointing. I've been working really hard. To lose control of the golf ball like I did today is really frustrating, but I believe the hard work will start paying off soon."
For other's, like Tiger Woods, it was a close match throughout the day as both him and his opponent Gonzalo Fdez-Castano struggled to string decent shots together.
On the 10th hole, both Woods and Fdez-Castano hit their balls into the desert.
"I hit a bad tee shot at 10," Woods said. "After all that, I still had a putt to halve a hole and I missed it. And then at 11, I was kind of right between clubs. I mean it's hard to convince myself when I have 272 to the hole and it's a smooth 3-iron, and I decided to take off the 5-wood and try to chip it down there and put it either in the bunker or left, so I would have an easy pitch up the hill. And I hit it too far, I hit 280."
Thursday's tee times will be:
9:25 a.m. Stricker, Steve - Oosthuizen Louis
9:37 a.m. Yang, Y.E. - Mahan, Hunter
9:49 a.m. Manassero, Matteo - Laird, Martin
10:01 a.m. Ishikawa, Ryo - Lawrie, Paul
10:13 a.m. Rock, Robert - Wilson, Mark
10:25 a.m. Johnson, Dustin - Molinari, Francesco
10:37 a.m. Day, Jason - Senden, John
10:49 a.m. Schwartzel, - Charl Bae, Sang-Moon
11:01 a.m. Kaymer, Martin - Toms, David
11:13 a.m. Kuchar, Matt - Watson, Bubba
11:25 a.m. Westwood, Lee - Karlsson, Robert
11:37 a.m. Watney, Nick - Woods, Tiger
11:49 a.m. Els, Ernie - Hanson, Peter
12:01 p.m. Stanley, Kyle - Snedeker, Brandt
12:13 p.m. McIlroy, Rory - Hansen, Anders
12:25 p.m. Jimenez, Miguel A. - Bradley, Keegan