Matteo Berrettini vs Mariano Navone — R64 — US Open

The chances on return separated them: Berrettini converted 2 of 9 break points to Navone's 3 of 7, went 0-for-5 in the third set, and finished with 77 unforced errors against 44 winners. The turn came in game 6 of the second, Navone breaking for 4-2. From there the Argentine, a clay-bred counter-puncher who came in 5-8 on hard this season, landed 70 percent of his first serves and won 13 of his 15 net points. Berrettini saved three match points and lost the tiebreak anyway, 3 hours and 28 minutes in. Navone, who opened the US Open by beating Djokovic in five, moves into the third round with a second win over the Italian on hard.