Walter Trusendi defeated Matteo Marrai 6-4 6-3 in the Italy F4 qualifying round on clay. The upset overturned the form book — Matteo Marrai came in leading the head-to-head 3–2. Walter Trusendi narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-07-25 | Italy F20 | QF | clay | Walter Trusendi | 6-3 6-0 |
| 2010-05-24 | Italy F10 | R32 | clay | Matteo Marrai | 2-0 |
| 2008-09-29 | Italy F33 | SF | clay | Matteo Marrai | 6-4 7-5 |
| 2008-06-16 | Germany F7 | R16 | clay | Matteo Marrai | 7-5 6-3 |
| 2006-07-24 | Italy F24 | R32 | clay | Walter Trusendi | 6-3 1-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.