London: Former US Open champion Juan Martin del Potro set up a fourth round clash against Rafael Nadal at Wimbledon after the Argentine defeated Gilles Simon 7-6 (10/8), 7-6 (7/5), 7-5 on Saturday.
Del Potro defeated Nadal in the US Open semi-finals in 2009 en route to the first Grand Slam title of his career and could pose more problems for the Spaniard at the All England Club when they meet on Monday.
Reigning Wimbledon champion Nadal will be aware that Del Potro has won three of their eight encounters and, after missing most of last year with a wrist injury, the Argentine is finally fit and recapturing his best form.
The 22-year-old is currently 21st in the world after previously being ranked as high as fourth and has dropped just one set in his three matches so far at Wimbledon.
Although he has struggled on grass in the past, Del Potro's serve was especially impressive in a hard-fought third round win against French 15th seed Simon.
Del Potro took the first set in a marathon tie-break and then recovered from 4-2 down to win the second set in the same manner.
Simon was unable to make any impact on Del Potro's serve in the third set and one break was all the Argentinian needed to go through.