Berettini’s win

Matteo Berrettini describes his mental coach as a big help and a best friend. They’ve been speaking on the phone before and after every match during Berrettini’s run to his first Grand Slam semifinal.

They had plenty to chat about when it came to this latest victory.

Berrettini, a 23-year-old from Rome, gave Italy a spot in the final four at the US Open for the first time since 1977 in dramatic fashion, double-faulting away his initial match point and then needing four more to finally put away 13th-seeded Gael Monfils of France 3-6 6-3 6-2 3-6 7-6 (5) after nearly four hours in New York yesterday.

Berrettini will play Rafael Nadal in the semifinals after the Spaniard beat Diego Schwartzman (Argentina) 6-4 7-5 6-2.

‘‘He told me, ‘I need to thank you, because I thought that everyone is born once and dies once. But during that match, I was born and died 15 or 16 times,’’ Berrettini said about his conversation with the mental coach he’s worked with for several years. ‘‘I

‘‘During that match, I was born and died 15 or 16 times.’’

Matteo Berrettini

collapsed and got back up. I collapsed and got back up. That match point. Those other chances. I was down then I came back. It’s a great source of pride for me.’’

In truth, the denouement was hardly a thing of beauty, with both men, clearly spent, fighting themselves and the tension of the moment as much as the guy on the other side of the net.

Monfils finished with 17 double-faults but managed to avoid any throughout the entire, exhausting fifth set until he served at 6-5 – and then he had three in that game, plus another two in the deciding tiebreaker, often doubling over between points to rest and catch his breath.

‘‘A very bad day for me, serving,’’ Monfils said.

Berrettini acknowledged the obvious afterward, too, saying he felt ‘‘a little bit tight.’’

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