Another American through

Wild-card entry Sam Warburg, a four-time All-American at Stanford, moved on when Janko Tipsarevic, a guy who's had some success at Slams before -- he knocked Andy Roddick out of Wimbledon in the second round and took Roger Federer to a fifth set in the Australian Open before falling, 10-8 -- retired with an injury. Warburg won the first set, 6-2, and was up 1-0 in the second.

Warburg is 25 and just turned pro last year, which sounds odd in a sport where 25 is considered over-the-hill sometimes. But he's now made the second round of two Slams this year (also at the Australian), and you know what that means? Even if he goes out next round, he'll be up to $94,000 in prize money for a year in which his record is 3-5.

I thought only Carl Pavano made that much per win.