It was a gruelling and see-sawing battle in the third but Nadal continued his comeback to take a two-sets-to-one lead, having been down a break at 5-4. "Have been physically demanding because the conditions have been tough out there", he said. It was a step forward for me in the dynamic of the tournament.
When it was all over, Nadal was happy to be in a seventh US Open semifinal, but even happier that he'd done everything he could to turn the match around.
Meanwhile, Thiem said his epic defeat to close friend Nadal i will "stay with me forever".
"A 6-0 is a very risky result", he continued.
However, the 32-year-old Spanish top seed recovered to lead two sets to one before Thiem levelled in a tie-break.
Back firmly to the wall, the 25-year-old got his one-handed backhand to work again, while belting out excellent serve after serve to force the fourth set to a tie break.
'I feel sorry for Dominic, he is a great guy and a great player. "He is young and has plenty of time to win tournaments".
Nadal had defeated Thiem in the Roland Garros final in June but this was their first meeting away from a clay court. He is a fighter with a great attitude so that is the most important thing.
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Remarkably, Thiem was the first top-20 player Nadal has faced at Flushing Meadows since his final win over Novak Djokovic in 2013, with last year's title seeing him take on a succession of unexpected opponents.
Present victor of the event 3 times filed via, actively gained fifty five factors and has made forty nine unforced errors.
"Yeah, it's going to be stuck in my mind forever", Thiem said after the match. "Forever I'm going to remember this match". "Tennis is cruel sometimes because I think this match didn't really deserve a loser. But there has to be one".
But the 17-time major champion was completely dismantled in the opening set by the red-hot Dominic Thiem in NY, where the Austrian ninth seed annihilated Nadal in just 24 minutes.
The Austrian blasted 13 winners, made only two unforced errors and allowed Nadal just seven points in winning an extraordinary opening set. But, as in the second set, when the time came to keep his foot on Nadal's throat, he instead loosened the pressure and lived to regret it.
Del Potro's victory was no walk in the park either, the Argentinian battling through strength-sapping heat and humidity to win 6-7 (5/7) 6-3 7-6 (7/4) 6-2.
The Spaniard will come up against another big-hitter Juan Martin Del Potro in the semis. Law and Whitaker say it feels like there's an irresistible force behind del Potro that's pushing him to the title.
"To play John in these kind of matches, it's like an epic".