Argentinas Juan Martin del Potro beat Filip Krajinovic of Serbia in straight sets on Friday to advance to the semifinals of the China Open in Beijing. Also Read - World no. 2 Novak Djokovic Pulls Out of Adelaide International

The Argentine world number four hit 12 aces en route to a 6-3, 6-0 victory, and held serve throughout despite Krajinovic having three break points which he failed to convert, reports Efe. Also Read - US Open 2019: Roger Federer Optimistic About His Chances at Flushing Meadows

Del Potro started tentatively but grew into the match to sweep the Serb aside in the second set. Also Read - Simona Halep Favourite to Win French Open: Justine Henin

The former US Open champion advances to the last four of the competition, where he will face in-form Italian Fabio Fognini.