Robert Strombachs defeated Luca Giacomini 6-1 6-2 in the M25 Esch/Alzette 1 round of 32 on hard. The upset overturned the form book — Luca Giacomini came in leading the head-to-head 1–0. Robert Strombachs claimed a first win over Luca Giacomini in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-07-01 | M15 Monastir 24 | R16 | hard | Luca Giacomini | 6-4 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.