Matteo Manassero, the 17-year-old Italian, led by one hole entering the 16th hole when a cactus brought him back to all square.
He hit a self-described "terrible" tee shot that landed inside a cactus. He tried to lift a branch out of the cactus to give himself a clearer shot, but the ball began to move. Rather than take a drop and play from behind, he conceded the hole to Charl Schwartzel.
It was his first-ever experience with a ball in a cactus. Seriously.
"We don't have many in Europe," he said.
Tweet of the day
"Seeing as @IanJamesPoulter was home, thought I'd represent the pink slacks today! My friends are already giving me grief!"
Luke Donald, on @Luke_Donald, about Thursday's duds
After getting about four hours of sleep before Wednesday's first-round win, J.B. Holmes made sure to get in bed early before Thursday's 1-up win against Ernie Els.
"I'm good," he said. "Not too big of a deal. Not an issue now."
Holmes revealed Thursday that he had never as a professional played a tournament without a practice round on the course first. Maybe he should try it more often.
Since arriving in Tucson and falling asleep just hours before his first round, Holmes has gone 2-0 to advance to the Round of 16.
Hours before the Arizona Wildcats were to play a crucial game against USC coach Kevin O'Neill, former coach Lute Olson was spotted watching at the driving range and later near a green.
UA defensive coordinator Tim Kish popped up around the course, too.
We also spotted Mark Burk, a golf pro who in 2008 found himself homeless and living in abandoned construction pipes in Palm Springs, Calif., after a failed relationship. Burk was the subject of "Pipe Dream," a 10-part reality series on Golf Channel.
The big number
47 years, 1 month, 22 days
Miguel Angel Jimenez's age on Sunday. The oldest player to win the WGC-Accenture Match Play Championship was David Toms at just over 38 years. The oldest player to win a World Golf Championships event is Vijay Singh, at just over 45 years.
Outfit of the Day
Ryan Moore, you are awesome.
Dude wore a blue hat and white dress shirt with a matching royal blue necktie Thursday. Yes, necktie (it's his thing). He threw a black cardigan sweater over it, completing the classic old-school golf look.
And he won - crushing K.J. Choi, 5 and 4 - which means we'll hopefully see another tie today.
"The guys that complain are the guys that lose. I think, you know, it could be that's just the luck of the draw. A (team), you know, can have a Cy Young pitcher, and he gives up 10 runs or something. I think that's just the way things are."
Nick Watney, after beating No. 1 seed Lee Westwood
After being eliminated 4 and 3 by Y.E. Yang, match play stalwart Stewart Cink spent most of the afternoon at the driving range and putting green, clearly frustrated by his performance. We also spotted Ryo Ishikawa, Alvaro Quiros and Yuta Ikeda on the range, presumably waiting for their plane rides home.