Argentina's Juan Martin Del Potro, winner of the US Open in 2009 and finalist last year, will not be competing in the final Grand Slam tournament of the year, which begins August 26 at the Flushing Meadows courts in New York. York, announced the organizers Tuesday. Del Potro, the 12th and 30-year-old world player, had knee right kneecap after injured at the last Queen's tournament in June. He has since been rehabilitated and will not be ready for the US Open.
Serena Williams throws in the towel for Cincinnati. Serena Williams dropped out Tuesday for the Cincinnati WTA Masters before her first match due to a back injury. The 37-year-old American had already dropped out of the Toronto final because of back spasms. Not a good omen before the US Open, of which she is the outgoing finalist.