Iain Bates defeated Martin Lee 6-0 6-4 in the Great Britain Masters 4 round of 32 on grass. The upset overturned the form book — Martin Lee came in leading the head-to-head 1–0. Iain Bates claimed a first win over Martin Lee in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-04-29 | Great Britain F5 | R32 | clay | Martin Lee | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.