Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Fayetteville | 2021/11/01 14:00 | Blu Baker v Constantin Frantzen | 7-6,3-6,5-10 |
| ITF M15 Lubbock | 2021/09/26 15:00 | Constantin Frantzen v Sven Lah | 3-6,6-1,4-10 |
| ITF M25 Fort Worth | 2019/10/21 15:00 | Constantin Frantzen v Spencer Papa | 5-7,3-6 |
| ITF M25 Fort Worth | 2019/10/20 15:00 | Constantin Frantzen v Ricardo Alban | 6-3,6-0 |
| ITF M25 Waco | 2019/10/13 15:00 | Constantin Frantzen v Alexander Lebedev | 6-7,2-6 |
| 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 M15 Naples | 2021/10/12 13:30 | Mathieu Scaglia v Tommaso Carnevale-Miino | 0-6,3-6 |
| ITF M15 Naples | 2021/10/06 15:40 | Michael Redlicki v Mathieu Scaglia | 6-0,7-5 |
| ITF M15 Naples | 2021/10/05 13:30 | Mathieu Scaglia v Tommaso Carnevale-Miino | 6-1,6-3 |
| ITF M15 Lubbock | 2021/09/30 14:55 | Gijs Brouwer v Mathieu Scaglia | 6-2,6-0 |
| ITF M15 Lubbock | 2021/09/29 16:40 | Mathieu Scaglia v Jacob Brumm | 7-6,6-2 |
| ITF M25 Fayetteville | 2021/09/20 17:00 | Nemanja Malesevic v Mathieu Scaglia | 6-2,6-3 |
| ITF M15 Chornomorsk | 2021/08/30 10:30 | Mathieu Scaglia v Artem Podorozhnyi | 5-7,6-3,3-10 |
| ITF M15 Chornomorsk | 2021/08/30 07:00 | Mathieu Scaglia v Mykhailo Mossur | 6-4,6-2 |