Grant Doyle defeated Helge Koll 6-4 6-1 in the Ireland F1 round of 32 on carpet. The result followed the form book — Grant Doyle came in leading the head-to-head 1–0. Grant Doyle extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-03-26 | USA 1 Masters 3 | R32 | hard | Grant Doyle | 6-1 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.