Stadium: Court 3 Round: 26 Ground: Clay
| ITF M15 Melilla | 2021/09/24 16:10 | Zakhar Trapeznikov v Daniel Rincon | 6-7,6-4,4-6 |
| Challenger Mallorca | 2021/08/31 12:55 | Daniel Rincon v Stefan Kozlov | 3-6,6-1,1-6 |
| ATP Mallorca | 2021/06/19 12:25 | Roberto Carballes Baena v Daniel Rincon | 6-2,6-1 |
| ITF M15 Valldoreix | 2021/05/12 07:55 | Louis Dussin v Daniel Rincon | 6-2,6-4 |
| ITF M15 Majadahonda | 2021/05/06 10:45 | Alex Rybakov v Daniel Rincon | 6-4,6-3 |
| ITF M15 Majadahonda | 2021/05/04 09:45 | Daniel Rincon v Pablo Vivero Gonzalez | 6-4,7-5 |
| ITF M15 LPD Gran Canaria | 2021/04/28 14:25 | Daniel Rincon v Nicolas Moreno De Alboran | 6-2,4-6,4-6 |
| ITF M15 Las Palmas | 2021/04/26 08:30 | Xavier Gabarro v Daniel Rincon | 3-6,0-6 |
| ITF M15 Melilla | 2021/09/24 14:05 | Kirill Mishkin v Alberto Barroso Campos | 0-6,7-5,6-1 |
| ITF M15 Melilla | 2021/09/21 08:00 | Xavier Gabarro v Kirill Mishkin | 3-6,2-6 |
| ITF M15 Melilla | 2021/09/20 11:00 | Kirill Mishkin v Vitali Shvets | 7-5,6-2 |
| ITF M25 Madrid | 2021/09/13 10:00 | Michel Vernier v Kirill Mishkin | 6-3,6-1 |
| ITF M25 Madrid | 2021/09/12 17:00 | Vitali Shvets v Kirill Mishkin | 4-6,5-7 |
| ITF M25 Oviedo | 2021/08/29 09:45 | Kirill Mishkin v Rafael Mazon-Hernandez | 3-6,3-6 |
| ITF M15 Antalya | 2021/06/27 06:30 | Kirill Mishkin v Menelaos Efstathiou | 1-6,3-6 |
| ITF M15 Antalya | 2021/06/13 07:30 | Kirill Mishkin v Cheng-Yu Yu | 4-6,3-6 |