He will now face Serbia’s Janko Tipsarevic, who is the 7th seed in this year’s tournament. The Serbian, who often has to play in the shadow of compatriot Djokovic, was taken to three sets by Germany’s Philipp Petzschner, coming back from a set down to prevail 3-6 6-3 6-4 in the end.
Tipsarevic had to dig deep to win to win the second set 6-3, just before securing a place in the third round and a show down with Isner by taking the third set 6-4. In a game that lasted 1 hour and 46 minutes, Tipsarevic hit 7 aces and came up with 28 winners.
Elsewhere, there were wins for Argentina’s Del Potro, who cruised past Italy’s Andreas Seppi in straight sets 6-3 7-6 (2), whilst France’s Gilles Simon dismissed Bulgarian Grigor Dimitrov 6-3 6-3.