Guillaume Marx defeated Stefano Cobolli 6-0 2-6 6-4 in the Italy F4 round of 32 on clay. The result followed the form book — Guillaume Marx came in leading the head-to-head 2–0. Guillaume Marx extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-04-30 | Italy F1 | R16 | clay | Guillaume Marx | 6-7(4) 6-3 6-2 |
| 1998-06-16 | Italy F10 | QF | clay | Guillaume Marx | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.