Serena Williams: The tennis star “underwent emergency treatment at Cedars for a hematoma she suffered as a result of treatment for a more critical situation.” Foot issues, a blood clot in her throat … geez. The best player in women’s tennis (sorry, Caroline Wozniacki) has about four months to get ready for Wimbledon. Williams was healthy enough to attend the Vanity Fair Oscar Party over the weekend, though. [People]