Tommy Paul (seed 14) won in 2 sets against Daniil Medvedev (seed 2)
Alejandro Tabilo (seed 29) won in 2 sets against Karen Khachanov (seed 16)
Stefanos Tsitsipas (seed 6) won in 2 sets against Alex de Minaur (seed 9)
Hubert Hurkacz (seed 7) won in 3 sets against Sebastian Baez (seed 17)