Stadium: Court 16 Round: 25 Ground: Clay
| Challenger Biella | 2021/03/09 15:05 | Lorenzo Giustino v Yasutaka Uchiyama | 7-5,6-4 |
| ATP Singapore | 2021/02/25 12:30 | Soonwoo Kwon v Yasutaka Uchiyama | 6-3,6-4 |
| ATP Singapore | 2021/02/23 04:00 | Yasutaka Uchiyama v Marc Polmans | 6-4,2-6,6-4 |
| Australian Open | 2021/02/08 05:00 | Yasutaka Uchiyama v Ugo Humbert | 3-6,4-6,7-6,3-6 |
| ATP Great Ocean Road Open | 2021/01/31 23:30 | Aljaz Bedene v Yasutaka Uchiyama | 7-6,7-6 |
| Challenger Ortisei | 2020/11/16 14:20 | Yasutaka Uchiyama v Alexandre Muller | 3-6,4-6 |
| Challenger Bratislava | 2020/11/09 11:05 | Blaz Rola v Yasutaka Uchiyama | 7-6,6-4 |
| ATP Antwerp | 2020/10/19 10:00 | Marcos Giron v Yasutaka Uchiyama | 7-6,6-2 |
| Challenger Gran Canaria | 2021/03/04 12:45 | Nikola Milojevic v Eduard Esteve Lobato | 5-7,3-6 |
| Challenger Gran Canaria | 2021/03/02 10:00 | Nikola Milojevic v Tommy Robredo | 6-2,6-3 |
| Challenger Gran Canaria | 2021/02/27 12:00 | Nikola Milojevic v Enzo Couacaud | 2-6,2-6 |
| Challenger Gran Canaria | 2021/02/26 11:00 | Andrea Pellegrino v Nikola Milojevic | 6-4,1-6,4-6 |
| Challenger Gran Canaria | 2021/02/25 15:20 | Constant Lestienne v Nikola Milojevic | 2-6,4-6 |
| Challenger Gran Canaria | 2021/02/23 12:20 | Javier Barranco Cosano v Nikola Milojevic | 6-4,4-6,3-6 |
| Australian Open | 2021/01/12 14:55 | Frederico Ferreira Silva v Nikola Milojevic | 2-6,6-1,6-4 |
| Australian Open | 2021/01/11 12:10 | Matteo Viola v Nikola Milojevic | 4-6,4-6 |