Russian world number three Maria Sharapova has pulled out of the US Open Tennis because of a right shoulder injury. On the eve of the draw for the year's final Grand Slam event that begins on Monday on the Flushing Meadows hardcourts, US Open tournament director David Brewer announced the withdrawal.As a result, Poland's Agnieszka Radwanska moves into thethird seed in the women's singles draw and other seeds willmove up one place, with Russia's Anastasia Pavlyuchenkovaadvancing into the 32nd spot.Sharapova's only match since a second-round defeat at Wimbledon in late June was a loss in her opening match in last week's WTA event at Cincinnati to American Sloane Stephens. That was followed by a split with Jimmy Connors, who had been her coach for less than three weeks. Sharapova had been nursing a hip injury after Wimbledon