Marko Neunteibl defeated Konstantin Don Gruber 6-3 6-1 in the Austria F1 round of 32 on clay. The result followed the form book — Marko Neunteibl came in leading the head-to-head 2–1. Marko Neunteibl extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-06-13 | Slovenia F3 | QF | clay | Konstantin Don Gruber | 7-6(4) 6-4 |
| 2003-09-08 | Slovak Rep F1 | F | clay | Marko Neunteibl | 7-5 1-6 7-5 |
| 2003-07-14 | Austria F2 | SF | clay | Marko Neunteibl | 6-2 7-6(0) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.