2010 US Open – Boys' singles

The boys' singles tournament of the 2010 US Open started on Sunday, September 5, the seventh day of the main tournament.

Bernard Tomic was the defending champion, but he did not defend his title as he had stopped playing junior tournaments in 2010, despite still being eligible to do so as a 1992 birth.

Jack Sock, who received a wildcard into the singles main draw, won this tournament after defeating his compatriot, tenth-seeded Denis Kudla, in the final.

Seeds
• # 🇨🇴 Juan Sebastián Gómez (first round)

• # 🇭🇺 Márton Fucsovics (semifinals)

• # 🇧🇷 Tiago Fernandes (third round)

• # 🇨🇿 Jiří Veselý (quarterfinals)

• # 🇧🇦 Damir Džumhur (third round)

• # 🇦🇺 Jason Kubler (first round)

• # 🇵🇪 Duilio Beretta (second round, retired)

• # 🇦🇷 Agustín Velotti (semifinals)

• # 🇦🇺 James Duckworth (first round)

• # 🇺🇸 Denis Kudla (final)

• # 🇦🇷 Renzo Olivo (first round)

• # 🇭🇺 Máté Zsiga (first round)

• # 🇷🇺 Victor Baluda (quarterfinals)

• # 🇦🇹 Dominic Thiem (first round)

• # 🇪🇨 Roberto Quiroz (first round)

• # 🇺🇸 Mitchell Frank (third round)