Quick U.S. Open tennis check-in

Serena is playing as I write this -- she's looked awesome. Hard to see how anyone can stop her. Sorry that Sharapova got upset (I always am).

Good men's matches yesterday: Donald Young did great, and the Del Potro - Simon match was entertaining. Good to see Andy Roddick get into the second week. But given the current domination run, it's most likely to be Dvokojic-Nadal.

Andy Murray looks like he has an easy path to the semi-finals. I'd love to see him break through to a title here.