Stadium: Pista 1 Round: 14 Ground: Hardcourt outdoor
| Challenger Liberec | 2021/08/01 12:30 | David Vega Hernandez v Thomaz Bellucci | 6-3,3-6,6-3 |
| Challenger Poznan | 2021/07/25 13:25 | Thomaz Bellucci v David Poljak | 6-4,3-6,1-6 |
| Challenger Pozoblanco | 2021/07/20 17:10 | Matteo Viola v Thomaz Bellucci | 6-1,6-3 |
| Challenger Amersfoort | 2021/07/13 10:30 | Thomaz Bellucci v Facundo Mena | 3-6,4-6 |
| ITF M15 Champaign | 2021/06/24 14:55 | Kyle Seelig v Thomaz Bellucci | 2-6,6-2,6-4 |
| ITF M15 Champaign | 2021/06/23 21:50 | Roy Smith v Thomaz Bellucci | 6-7,3-6 |
| ITF M25 Tulsa | 2021/06/16 00:45 | Genaro Alberto Olivieri v Thomaz Bellucci | 6-3,7-5 |
| Challenger Ostrava | 2021/04/25 12:40 | Oscar Otte v Thomaz Bellucci | 6-4,6-3 |
| ITF M15 Huy | 2021/08/22 08:55 | Alexandre Aubriot v Rafael Giotis | 6-3,6-4 |
| ITF M15 Monastir | 2021/06/13 08:00 | Rafael Giotis v Keenan Mayo | 4-6,0-6 |
| ITF M25 Vic | 2021/05/16 07:00 | Vicente O Moratalla v Rafael Giotis | 6-3,6-4 |
| ITF M15 Valldoreix | 2021/05/09 13:00 | Francisco Cabral v Rafael Giotis | 7-5,6-0 |
| ITF M15 Las Palmas | 2021/04/26 10:30 | Inaki Cabrera Bello v Rafael Giotis | 6-3,6-4 |
| ITF M15 Las Palmas | 2021/04/25 14:30 | Rafael Giotis v Martin Breysach | 5-7,6-2,10-4 |
| ITF M25 Reus | 2021/04/11 07:00 | Kenny de Schepper v Rafael Giotis | 6-3,6-4 |
| ITF M15 Antalya | 2021/03/30 07:00 | Vlad Andrei Dancu v Rafael Giotis | 0-6,7-6,10-2 |