Colin Sinclair defeated Marvin Netuschil 6-3 7-6 in the M25+H Jablonec Nad Nisou 1 round of 32 on clay. The upset overturned the form book — Marvin Netuschil came in leading the head-to-head 1–0. Colin Sinclair claimed a first win over Marvin Netuschil in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-06-07 | M25 Karlsruhe 1 | QF | clay | Marvin Netuschil | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.