Carlos Alcaraz beat Jannik Sinner in four sets on Sunday to win the US Open and reassert his dominance of an era-defining rivalry while also displacing his opponent as the top-ranked tennis player in the world.

After a delayed start to the match due to the presence of US President Donald Trump which necessitated tighter security protocols, the 22-year-old Spaniard won 6-2, 3-6, 6-1, 6-4 to capture his second US Open crown and sixth Grand Slam title, avenging his lone defeat in a major final by Sinner at Wimbledon in July.