Top ranked Jannik Sinner pulls out of US Open after suffering knee injury
Top-ranked Jannik Sinner withdrew from the U.S. Open on Friday, unable to recover from a right knee injury that has sidelined him since winning the Wimbledon title. Sinner beat Alexander Zverev last month for his second straight title at the All England Club, but then pulled out of the hard-court tournaments in Montreal and Cincinnati that serve as a warmup for the U.S. Open. The 25-year-old Italian wrote Friday that he won't be ready when the main draw begins on Aug. 30. "Even though I have be…




