Giacomo Oradini defeated Michael Lammer 6-3 3-6 6-3 in the Italy F17 round of 32 on clay. The upset overturned the form book — Michael Lammer came in leading the head-to-head 1–0. Giacomo Oradini claimed a first win over Michael Lammer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-20 | Italy F9 | R16 | clay | Michael Lammer | 3-6 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.