Martin Slanar defeated Michael Ouvarov 6-3 6-2 in the Great Britain F11 round of 32 on hard. The upset overturned the form book — Michael Ouvarov came in leading the head-to-head 1–0, but Martin Slanar had been the form player, winning 2 of their last 6 on hard. Martin Slanar claimed a first win over Michael Ouvarov in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-10-20 | Nigeria F5 | R16 | hard | Michael Ouvarov | 7-5 7-6(12) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.