Carlos Alcaraz won a spellbinding battle of the young guns against Jannik Sinner to reach his first grand slam semi-final in the US Open's latest ever finish.Spanish teenager Alcaraz finally clinched a 3-6 7-6 (7) 7-6 (0) 5-7 6-3 victory at 2.50am after five hours and 15 minutes of full throttle tennis to set up a clash with Frances Tiafoe on Friday.Remarkably, three matches had previously finished at 2.26am, while this was the second time Alcaraz had played beyond 2am in succession after his fourth-round win over Marin Cilic finished at 2.23am.The 19-year-old saved a match point in the fourth set and came from a break down in the decider against his 21-year-old opponent to show once again what a special talent he is.He could yet leave New York as the world number one but, in a tournament that appears to have finally signalled a real changing of the guard, this match was more than anything a demonstration that men's tennis need not be scared of a future without its aging superstars.The fans that remained until the end cheered loudly for Alcaraz, and he said: "Honestly I still don't know how I did it.
The level of the match, high quality of tennis."It's unbelievable the match today. Jannik Sinner is a great player. I will never be tired to say that all the wins I have in this amazing court is thanks to the support I receive."I just believed in myself, believed in my game.
I knew to close a match is really difficult, I have to stay in the match, try to stay calm."Sinner's spell as the brightest young talent in tennis was swiftly cut short by the emergence of Alcaraz, who swept past his rival and into the top 10.But the Italian had come out on top in their two recent meetings, in the fourth round at Wimbledon and then at