The big showdown is getting closer and closer, and the fight for a place in the final at the last Grand Slam of the year is gruelling. Many tennis fans hoped for the first giant duel on the Arthur Ashe Stadium between Rafael Nadal and Roger Federer. It will not happen, and most US Open men predictions were wrong. The Argentinian Juan Martin del Potro beat all US Open ATP odds by beating Federer in four sets. This leads to the semi-final between Nadal and Del Potro! Will "DelPo" surprise Rafael Nadal as well? Let's check our tennis betting picks.

US Open Betting Preview for September 8

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In a nutshell, this is probably the most anticipated semi-final at this year's US Open. The winner of this match will be the favourite for the final on Sunday. Nadal was able to save a lot of energy in the last few rounds, while Del Potro will be "whipped" by the fans in the game against Nadal. The Spaniard is an absolute audience favourite in the Big Apple. US Open betting odds are also on his side, but del Potro is the one who really fought hard against one of the best players of all time to reach this point of the tournament.

Rafael Nadal – Current Form, Stats, & Latest Matches

Rafael Nadal gave an extensive lecture to the Russian Andrey Rublev. The 19-year-old teenager has played a very strong tournament and achieved the greatest success in his career. Before the 2017 US Open, the second round was his best Grand Slam result. In his first quarter-final, he was overwhelmed by the mood in the vast Arthur Ashe Stadium, and he lost in reverence to his idol Rafael Nadal. The Spaniard played excellently and overrun his opponent formally, according to our US Open ATP betting tips. After just 23 minutes, set one 6-1 was already decided in his favour. In the next two sets, Nadal dominated as well and after only 1:36h the match had already finished. Rublev could not handle his nervousness, and in three sets, he made no less than forty-four unintended mistakes. Rublev could not be blamed for not trying anything, but Nadal overpowered him in the longer ball changes. Nadal had no less than 18 breakballs. The Spaniard defeated Dolgopolov, Mayer, Daniel, and Lajovic on his way to this point.

Juan Martin del Potro – Current Form,Stats, & Latest Matches

It is a huge surprise to see the Argentinian in the semi-finals of the 2017 US Open. In the first rounds of the tournament, the Argentinian was able to impress us with some strong performances against all US Open betting suggestions. Without problems, he marched into the round of the last 16. Even Roberto Bautista-Agut, a top-20 player, did not manage to win against him. "DelPo" managed the most spectacular revival at this tournament in the game against Dominic Thiem where he stood for a long time in a losing position. He thought about giving up. With 1-6 and 2-6, he was losing hard. But something happened at one point. Del Potro grew stronger by the minute. Again and again, he could rely on his serve (two matchballs with an ace) and he managed to beat Thiem.

After the match against Federer, Arthur Ashe once again looked like a football stadium. Del Potro was frantically cheered and Roger Federer, the veteran of the season, received a lot of applause. The support of the fans meant a lot for the Argentinian and he is bursting with self-confidence now, but US Open ATP odds are still not in his favour.

H2H: Rafael Nadal vs Juan Martin del Potro

The Spaniard Rafael Nadal has won eight of the 13 matches against "DelPo". However, Nadal should be warned because del Potro has won the last two clashes. In 2013, "DelPo" clinched a victory in two sets at the Masters in Shanghai and last summer, the Argentinian destroyed Nadal's dream of an Olympic medal in the semi-final when he finished 7-2 in the tiebreak of the third set. On hard ground, Nadal could only win four of nine games.

US Open Betting Tips

US Open Rafael Nadal vs Juan Martin

11/5

Juan Martin del Potro to win

£30

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The giant duel for the number one position will not be there, as Federer is out, but the semi-final between Rafael Nadal and Juan Martin del Potro is still waiting for a high-class match. The Argentinian played very well against Federer and could once again rely on his serve and the forehand in the decisive situations. This will also be the key to success against Nadal. The memories of the Spaniard against del Potro are very positive despite the negative head-to-head balance. Nadal has not really been tested in this tournament. Del Potro is the first real opponent for the Spaniard. Accordingly, we see no value in betting on Nadal, the 4/11 US Open betting odds at Betway for an outright win are nevertheless a bit too low. "DelPo" has the weapons and the self-confidence to win.

US Open Rafael Nadal vs Juan Martin

4/7

Over 3.5 Sets

£30

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Looking over the stats, we can easily see that most matches of both players were decided in at least three sets. Given the stakes of this clash, we expect to see at least four sets. For instance, it took del Potro five sets to win against Thiem, a very worthy opponent. The clash with Federer required four sets. On the other hand, Nadal played four sets as well against Mayer and Daniel. This seems to be a very healthy pick. Unibet and Betway offer the best live tennis odds today!