Defeated John Isner explains what makes Juan Martin del Potro so good

Juan Martin Del Potro looks on

John Isner says Juan Martin del Potro’s court-smarts make him a nightmare opponent to face.

The pair met in a US Open quarter-final on Tuesday, with the latter winning to move into the last four of the tournament.

Speaking afterwards, though, Isner tried to explain what makes the Argentinian so formidable.

“He’s so good, and especially when he gets control of the point, of course on his forehand side, he doesn’t miss that shot very often, if at all,” said Isner.

“He’s such a tough player and he’s playing well and he likes these conditions. He likes playing on a hard court like this.

“Yeah, I mean, again, when he gets control of the point, it’s very tough to wrest it back from him. Yeah, that’s what he does so well, and I think he’s exhibited that throughout this whole tournament. He’s been playing very well.”

Del Potro, who won the US Open in 2009 – his solitary Grand Slam success to date – says he’s just happy to be reaching the latter stages of the biggest tournaments again.

“I played a good match. I don’t know if I’m playing my best tennis ever, but I’m feeling good. I reach another semi-finals in this Grand Slam, which means something big to me. I’m very happy for that.”

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