In round nine of the 2021 U.S. Chess Championship, which took place after a rest day, all leaders drew their games. Meanwhile, GM Fabiano Caruana beat GM Dariusz Swiercz. As a result, GMs Aleksandr Lenderman, Wesley So, and Sam Sevian are sharing first with 5.5/9, while GMs Ray Robson, Leinier Dominguez.