Stadium: Center Court Round: 25 Ground: Clay
| Challenger Santos | 2025/05/06 18:30 | Lautaro Midon v Nikolas Sanchez Izquierdo | 6-4,6-2 |
| Challenger Porto Alegre | 2025/05/04 15:00 | Santiago Rodriguez Taverna v Nikolas Sanchez Izquierdo | 4-6,6-4,7-6 |
| Challenger Porto Alegre | 2025/05/03 19:05 | Nikolas Sanchez Izquierdo v Alex Barrena | 1-6,7-5,6-4 |
| Challenger Porto Alegre | 2025/05/02 19:10 | Eduardo Ribeiro v Nikolas Sanchez Izquierdo | 5-7,5-7 |
| Challenger Porto Alegre | 2025/04/30 14:00 | Nikolas Sanchez Izquierdo v Juan Bautista Torres | 6-3,1-6,6-1 |
| Challenger Porto Alegre | 2025/04/29 13:00 | Nikolas Sanchez Izquierdo v Pedro Sakamoto | 6-2,6-0 |
| ITF M25 Santa Margherita | 2025/04/24 10:37 | Nikolas Sanchez Izquierdo v Laurent Lokoli | 3-6,6-3,6-7 |
| ITF M25 Santa Margherita | 2025/04/22 14:24 | Nikolas Sanchez Izquierdo v Giovanni Oradini | 7-5,6-4 |
| ITF M25 Austin | 2024/11/20 22:50 | Max Basing v Viktor Markov | 4-6,7-6,6-2 |
| Challenger Champaign | 2024/11/10 22:45 | Viktor Markov v Trey Hilderbrand | 1-6,2-6 |
| ITF M15 Winston-Salem | 2024/10/17 17:40 | Dhakshineswar Suresh v Viktor Markov | 6-3,6-2 |
| ITF M15 Winston-Salem | 2024/10/16 19:40 | William Manning v Viktor Markov | 3-6,6-7 |
| ITF M15 Winston-Salem | 2024/10/15 16:00 | Vasco L Prata v Viktor Markov | 0-6,3-6 |
| ITF M15 Winston-Salem | 2024/10/14 16:00 | Henry Lieberman v Viktor Markov | 6-4,1-6,13-15 |
| UTR Pro Tallahassee | 2024/09/21 13:30 | Viktor Markov v Erik Schiessl | 3-6,6-3,7-6 |
| UTR Pro Tallahassee | 2024/09/20 13:30 | Corey Craig v Viktor Markov | 6-7,3-6 |