Djokovic falls to Isner at Cincinnati Masters

CINCINNATI: World number one Djokovic fell 7-6 (7/5), 3-6, 7-5 to unseeded John Isner as the Serb's attempt to set another tennis record ended in defeat at the Cincinnati Masters.

Had Djokovic beaten the American he would have kept alive a bid to become the first man to win all nine Masters 1000 titles in his career.

Isner set up a Saturday semi with 2009 US Open winner Juan Martin del Potro, who beat qualifier Dmitry Tursunov 6-4, 3-6, 6-1.

Del Potro said he won despite dealing with pain in his left wrist. The Argentine missed much of the 2010 season with a wrist problems and remains cautious. (AFP)