Women's world No. 1 Serena Williams is unlikely to make her return to tennis at the WTA Pan Pacific Open in Tokyo, a source with knowledge of the situation tells ESPN. Williams, who's not playing in the U.S. Open due to a cut on her right foot that required surgery, has had a protective boot removed. She has said she was targeting the Pan Pacific Open, which begins Sept. 26, for her return to action. Williams hasn't played competitively since winning Wimbledon. She was reportedly hurt by a broken glass at a restaurant while she was in Munich in July. She had surgery on July 15. Williams said doctors advised her not to play the U.S. Open so that her foot can heal, and she called missing the tournament "one of the most devastating moments of my career." The top-ranked Williams has won three titles at Flushing Meadows, part of her 13 Grand Slam singles championships. http://sports.espn.go.com/sports/tennis/news/story?id=5512443
