Serbia's Novak Djokovic, chasing the first men's singles calendar-year Grand Slam since 1969, advanced to the third round of the US Open on Thursday by defeating Dutchman Tallon Griekspoor

NEW YORK - World number one Novak Djokovic moved five matches from completing the first men's singles calendar-year Grand Slam in 52 years by advancing to the third round of the US Open on Friday.