Jan Michael Gambill defeated Peter Wessels 6-2 5-7 6-3 in the Tokyo round of 64 on hard. The upset overturned the form book — Peter Wessels came in leading the head-to-head 2–0. Jan Michael Gambill claimed a first win over Peter Wessels in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-01-31 | Delray Beach | R16 | hard | Peter Wessels | 6-4 6-7(3) 6-3 |
| 1998-06-15 | s Hertogenbosch | R32 | grass | Peter Wessels | 6-4 6-4 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (18 vs 28). ATP, WTA & Challenger.