Impressive Carlos Alcaraz into US Open semi-finals

Alcaraz became the second man in the Open era to reach the last four at Flushing Meadows three times before turning 21.

Carlos Alcaraz accounted for Alexander Zverev (Frank Franklin II/AP)

Carlos Alcaraz moved a step closer to defending his US Open title after sweeping past Alexander Zverev to reach the semi-finals.

The Spanish world number one became the second man in the Open era, behind Andre Agassi, to reach the last four at Flushing Meadows three times before turning 21.