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Del Potro beats Isner and heat to reach U.S. Open semis

Del Potro beats Isner and heat to reach U.S. Open semis

"I think I played very solid this game", said Del Potro.

The 3rd seed and 2009 US Open champion Juan Martin del Potro is through to his sixth Grand Slam semi-final and the third in NY after a hard-fought 6-7 6-3 7-6 6-2 triumph over the home star John Isner in three hours and 30 minutes.

After the second set they both left the court for what turned out to be a six-minute bathroom break, with the usually mild-mannered Argentinian seemingly unhappy about the rules that were followed, remonstrating with officials as he came back out.

"Of course beating John in this kind of match is like an epic".

Despite that, the 29-year-old was never broken in the 3 hour 31 minute match where Isner unleashed 26 aces but was undone by 52 unforced errors compared to Del Potro's 14.

Del Potro dropped his first set of the tournament against 11th seed Isner, who was playing in his maiden quarter-final at his home Slam.

"I had a shower, lay on the table and I didn't want to come back again. We both felt exhausted in the end, we both fought all the match, and I think I survived with my serves in a couple of important moments of the match, and that was the only key".

"It was too hot for tennis". "I reach another semi-finals in this grand slam, which means something big to me".

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Allegri insisted that Serie A presents different issues to a player who has only played in Portugal, Spain and England previously. He continued, "Serie A is a league where the teams defend carefully".

It was all about Juan Martin in set number two, dropping three points on serve and creating a break point in the second game that Isner repelled with another ace.

He saved it with a forehand victor to reach the tie break where he scored a mini-break at 3-3 to gain the crucial lead that he cemented with three service winners, taking the breaker 7-5 after 57 minutes.

Speaking after he had won that fourth set to reach the last four Del Potro spoke about the heat and what he did during the break.

In among the wrist surgeries and long lay-offs, Del Potro has made three semi-finals, losing to Novak Djokovic at Wimbledon in 2013 and then Rafael Nadal here a year ago and at the French Open this summer.

Del Potro now has two days off before the semi-finals but will be keeping to himself, saying: "If I met them it could be risky for me".

Thiem, the ninth seed, is bidding to become the first Austrian to reach the semi-finals of the US Open.

Instead of that, Juan Martin had another break point at 3-3 but Isner saved it with a smash victor after a great serve, setting up a tie break and hoping for the similar outcome as in the first.