Jiri Lehecka (seed 30) won in 2 sets against Rafael Nadal (PR)
Francisco Cerundolo (seed 21) won in 2 sets against Alexander Zverev (seed 4)
Taylor Fritz (seed 12) won in 2 sets against Hubert Hurkacz (seed 8)
Felix Auger-Aliassime won in 2 sets against Casper Ruud (seed 5)