Who defeated Novak Djokovic in the third round of the 2024 US Open men's singles?

Alexei Popyrin defeated Novak Djokovic in the third round of the 2024 US Open men’s singles tournament.

The Australian won 6–4, 6–4, 2–6, 6–4 on August 30, 2024, ending Djokovic’s defense of the title he had won in 2023. Popyrin, the 28th seed, used his powerful serve and forehand to pressure Djokovic and recorded one of the tournament’s biggest upsets.

The result was especially notable because Djokovic had won the 2023 US Open without dropping a set in the final and arrived in New York as the defending champion. He also had recently won the Olympic singles gold medal in Paris, making the early exit an even sharper contrast with the previous season’s success.

This match is sometimes confused with Carlos Alcaraz’s third-round exit, which occurred one day earlier against Botic van de Zandschulp. Popyrin’s victory was specifically the defeat that eliminated Djokovic from the 2024 tournament.