Carlos Alcaraz prevails over Jannik Sinner in latest ever US Open finish

• Spaniard through to semis after winning five-set classic
• Match sets new mark in New York, finishing at 2.50am

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 6-3, 6-7 (7), 6-7 (0), 7-5, 6-3 victory at 2.50am after five hours and 15 minutes of full-throttle tennis, setting 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.