Nicolas Ernst defeated Jan Oliver Sadlowski 6-3 7-5 in the Germany F20 q32 on carpet. The upset overturned the form book — Jan Oliver Sadlowski came in leading the head-to-head 1–0. Nicolas Ernst claimed a first win over Jan Oliver Sadlowski in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-07-29 | Germany F12 | Q32 | clay | Jan Oliver Sadlowski | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.