Stadium: Court 4 Round: 44 Ground: Hardcourt outdoor
| ITF USA F34 | 2018/11/26 21:15 | Michael Geerts v Constantin Frantzen | 6-7,6-2,6-4 |
| ITF USA F34 | 2018/11/25 16:00 | Maximilian Sinn v Constantin Frantzen | 4-6,3-6 |
| ITF USA F34 | 2018/11/24 16:00 | Trey Hilderbrand v Constantin Frantzen | 1-6,7-5,5-7 |
| ITF USA F39 | 2017/11/29 16:00 | Constantin Frantzen v Karue Sell | 4-6,1-6 |
| ITF USA F39 | 2017/11/27 22:40 | Constantin Frantzen v Bjoern Petersen | 6-1,3-6,6-4 |
| ITF USA F39 Qual | 2016/11/26 15:00 | Constantin Frantzen v Hunter Johnson | 4-6,4-6 |
| ITF Germany F17 | 2015/10/18 13:00 | Vadym Ursu v Constantin Frantzen | 7-5,6-4 |
| ITF M25 Claremont | 2019/10/10 20:30 | Tanner K Smith v Alexander Lebedev | 3-6,7-6,6-2 |
| ITF M25 Claremont | 2019/10/08 18:25 | Alexander Lebedev v Ben Patael | 7-6,6-7,7-6 |
| ITF M25 Norman | 2019/10/02 18:00 | Felix Corwin v Alexander Lebedev | 7-6,6-1 |
| ITF M25 Norman | 2019/10/01 15:00 | Alexander Lebedev v Hendrik Jebens | 6-4,6-2 |
| ITF M25 Norman | 2019/09/30 15:00 | Alexander Lebedev v Nathan Han | 6-3,6-4 |
| ITF M25 Norman | 2019/09/29 15:00 | Alexander Lebedev v Preston Touliatos | 6-4,6-2 |
| ITF M25 Harlingen | 2019/09/25 14:00 | Tyler Zink v Alexander Lebedev | 6-1,6-2 |
| ITF M25 Houston | 2019/09/19 00:20 | Alexander Lebedev v Sam Riffice | 0-6,0-6 |