Juan MartÃn del Potro breaks up against Nadal, in his third semifinals of the US Open (22.00 hours, Eurosport) with a game that refers to his best days, those of his explosion in New York, where he left behind Nadal and Federer for In 2009, he won his only Grand Slam title. Curves came later, many and pronounced, but the Argentine proved to have admirable arrests and here he is, again, with four wrist operations in between, vigorous and firm, with the imprint of then, when everything was just beginning, after signed a year earlier with four titles. There is a key point in the tennis player that we are seeing along the last big of the course: he has recovered his backhand, a blow that had to be applied with particular caution since the interventions on the wrist occurred: in 2010 on the right, in 2014 on the left and in 2015 on two occasions also on the left. Characterized by hitting like a hammer from both sides, in addition to a great service, his tennis was lagged by losing effectiveness with the reverse. He worked hard to perfect the cut, less damaging to him. The limitations did not prevent him from winning bronze at the London 2012 Games and silver at the Rio Games in 2016 and lead Argentina that same year to conquer the coveted Davis Cup, in a tenacious survival exercise. On his way to the age of 30, Delpo appeared in this US Open as number 3 in the world, the best ranking of his career, credit reached after the Masters 1000 of Cincinnati, despite losing in the quarterfinals with David Goffin. The sudden defeats of Zverev and Dimitrov boosted him to a place that, however, well deserves after a remarkable season, which has also been a semifinalist of Roland Garros and quarter finalist of Wimbledon, in addition to winning Indian Wells his first Masters 1000 , to which is added the ATP 500 of Acapulco and the finals in Los Cabos and Auckland.