A spot in the next round is at stake on Sunday, when Jakub Mensik goes up against Learner Tien in the US Open round of 32. Jakub Mensik is 7-3 across recent matches. Learner Tien is 6-4 across recent matches.

Mensik's 76.7% behind the first serve (against 68% for Tien) means break chances should be scarce in one direction. Little separates them; Mensik gets the nod on the finest of margins.