Arne Thoms defeated Sander Groen 6-4 6-3 in the Newport round of 32 on grass. The result followed the form book — Arne Thoms came in leading the head-to-head 1–0, defending last year's round of 16. Arne Thoms extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-02-03 | Germany 1 Masters 4 | R16 | carpet | Arne Thoms | 6-4 3-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.