Head to Head
| Tennis Point Exhibition Series | 2020/05/15 13:35 | Jan Choinski v Constantin Schmitz | 2-4,4-3,1-4 |
| Tennis Point Exhibition Series | 2020/05/07 17:15 | Jan Choinski v Constantin Schmitz | 4-1,3-4,3-4 |
| Tennis Point Exhibition Series | 2020/05/04 10:15 | Constantin Schmitz v Jan Choinski | 4-3,0-4,1-4 |
| ITF Germany F11 | 2018/08/09 11:40 | Jan Choinski v Constantin Schmitz | 6-3,6-2 |