Jasmine Paolini vs Veronika Erjavec — R128 — US Open

Neither serve was safe on this one, so the ball-striking settled it: 36 winners to 13, and 68 percent of first-serve points won against 56. Paolini broke for 5-3 in the third, watched the 106th-ranked Erjavec break back in game 9 for 4-5 and save two match points, then broke again in game 10 for 6-4 to close after 1 hour 45 minutes. The Italian, whose 7 of 17 on break points left the door open all afternoon, was playing her first match since the Wimbledon quarterfinals and had no prior meetings on record with her opponent. Lucrezia Stefanini, No. 119, comes next.