Joao Sousa defeated Andrey Rublev 7-6 3-6 6-3 in the St. Petersburg round of 16 on carpet. The upset overturned the form book — Andrey Rublev came in leading the head-to-head 1–0, defending last year's round of 32. Joao Sousa claimed a first win over Andrey Rublev in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-10-01 | Beijing | R32 | hard | Andrey Rublev | 6-0 6-4 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.