OCC Thursday, Preceded

Wednesday's Olympic Crisis Center is again overflowing with comments, as James Blake progresses to the semifinals by beating Roger Federer, 6-4, 7-6. Meanwhile on Centre Court, Venus Williams and Li Na are beginning their quarterfinal, while over on Court 1, Serena Williams and Elena Dementieva each have a set apiece. Please use this post to discuss the day's tennis, until Ed McGrogan's official Thursday Olympic Crisis Center appears.

-- Rosangel Valenti