When does the U.S. Open tennis tournament start?
The fourth tennis major of the year begins Monday. Matches will air on the Tennis Channel (Sunflower Broadband Channel 157), ESPN2 (34) and CBS (5 and 13). The defending champions are Serena Williams and Roger Federer, who will each have a chance to win their third major titles of 2009. For more information, go to www.usopen.org.