Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2020/11/11 10:40 | Alexander Erler v Arnaud Bovy | 1-6,4-6 |
| ITF M15 Parnu | 2020/11/04 09:25 | Kristjan Tamm v Alexander Erler | 7-6,4-6,7-6 |
| ATP Vienna | 2020/10/24 13:50 | Alexander Erler v Vasek Pospisil | 6-3,3-6,2-6 |
| ITF M15 Forbach | 2020/10/03 12:30 | Antoine Cornut-Chauvinc v Alexander Erler | 7-5,6-4 |
| ITF M15 Forbach | 2020/10/02 13:00 | Antoine Bellier v Alexander Erler | 3-6,3-6 |
| ITF M15 Forbach | 2020/10/01 09:55 | Hugo Schott v Alexander Erler | 4-6,5-7 |
| ITF M15 Forbach | 2020/09/30 08:30 | Kai Lemstra v Alexander Erler | 3-6,2-6 |
| ITF M15 Monastir | 2020/09/26 08:30 | Alexander Erler v Luca Potenza | 4-6,5-7 |
| ITF M15 Sharm El Sheikh | 2020/02/28 08:00 | Karim-Mohamed Maamoun v Ryota Tanuma | 6-2,6-3 |
| ITF M15 Sharm El Sheikh | 2020/02/27 08:00 | Francesco Maestrelli v Ryota Tanuma | 4-6,3-6 |
| ITF M15 Sharm El Sheikh | 2020/02/26 08:00 | Issei Okamura v Ryota Tanuma | 3-6,2-6 |
| ITF M15 Sharm El Sheikh | 2020/02/19 12:00 | Daniil Glinka v Ryota Tanuma | 6-2,6-2 |
| Challenger Launceston | 2020/02/05 05:05 | Ryota Tanuma v Liam Broady | 3-6,2-6 |
| Challenger Launceston | 2020/02/03 23:00 | Ryota Tanuma v Tristan Schoolkate | 6-2,6-3 |
| Challenger Launceston | 2020/02/02 23:00 | Naoki Tajima v Ryota Tanuma | 6-2,6-2 |
| ITF M15 Hong Kong | 2020/01/09 03:25 | Makoto Ochi v Ryota Tanuma | 6-4,6-4 |