Michael Ryderstedt defeated Mateusz Kowalczyk 6-3 7-6 in the Poland F4 round of 32 on clay. The upset overturned the form book — Mateusz Kowalczyk came in leading the head-to-head 1–0, but Michael Ryderstedt had been the form player, winning 4 of their last 8 on clay. Michael Ryderstedt claimed a first win over Mateusz Kowalczyk in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-05-14 | Poland F1 | R32 | clay | Mateusz Kowalczyk | 7-5 7-6(6) |
Averages over each player's completed matches in the selected window (14 vs 3). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About