Stadium: Court 3 Round: 44 Ground: Clay
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Manfred Fellin v Leyton Rivera | 4-6,6-3,6-10 |
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Simon A Ivanov v Leyton Rivera | 6-4,6-2 |
| ITF M15 Monastir | 2021/04/19 12:00 | Leyton Rivera v Fabio Coelho | 4-6,2-6 |
| ITF M15 Monastir | 2021/04/18 10:00 | Leyton Rivera v Jonas Greif | 6-1,6-2 |
| ITF M15 Monastir | 2021/04/12 13:00 | Leyton Rivera v Niklas Schell | 4-6,7-6,8-10 |
| ITF M15 Monastir | 2021/04/12 09:00 | Luca Fantini v Leyton Rivera | 2-6,4-6 |
| ITF M15 Monastir | 2021/04/04 09:00 | Colin Sinclair v Leyton Rivera | 6-2,6-7,10-3 |
| ITF M15 Bratislava | 2021/03/08 09:00 | Neil Oberleitner v Leyton Rivera | 6-4,6-1 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Illya Maksymchuk v Egor Baklanov | 6-7,7-6,10-5 |
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Denis Constantin Spiridon v Illya Maksymchuk | 7-6,3-6,10-8 |
| ITF M15 Novomoskovsk | 2020/08/31 07:00 | Timur Maulenov v Illya Maksymchuk | 7-6,6-4 |
| ITF M15 Novomoskovsk | 2020/08/30 07:00 | Mykhaylo Muravyov v Illya Maksymchuk | 4-6,4-6 |