Serena Williams is questionable for the U.S. Open because of her recent foot injury, according to the WTA Tour. Williams cut her right foot on broken glass at a restaurant shortly after winning Wimbledon. The tour said last week she needed surgery and would miss three tournaments leading up to the Open. On Monday, tour spokesman Andrew Walker said Williams is questionable for the final Grand Slam of the year. Williams' return to the Open has been widely anticipated because of her tumultuous semifinal loss there last year, when she threw a tirade at a line judge at the end of a match against Kim Clijsters and was fined a record $82,500. Because of the injury, Williams is missing the entire World Team Tennis season with the Washington Kastles. Her team said she cut the bottom of her foot and needed stitches. "Hey guys I'm doing better," Williams tweeted Monday. "Thanks for all the love." http://sports.espn.go.com/sports/tennis/usopen10/news/story?id=5393509