| Challenger Concepcion | 04/22 20:00 | 25 | [458] Nicolas Zanellato v Gonzalo Bueno [361] | 7-5,3-6,0-6 | |
| Challenger Florianopolis | 04/02 14:45 | 25 | [106] Camilo Ugo Carabelli v Nicolas Zanellato [461] | 6-1,6-7,6-0 | |
| Challenger Sao Leopoldo | 03/25 14:00 | 19 | [443] Juan Bautista Torres v Nicolas Zanellato [487] | 6-3,6-4 | |
| Challenger Sao Leopoldo | 03/24 14:00 | 14 | [202] Conner Huertas Del Pino v Nicolas Zanellato [487] | 0-6,6-7 | |
| Challenger Asuncion | 03/21 22:40 | 26 | [95] Juan Pablo Varillas v Nicolas Zanellato [487] | 6-1,6-3 | |
| Challenger Asuncion | 03/20 01:00 | 25 | [439] Gonzalo Villanueva v Nicolas Zanellato [487] | 3-6,4-6 | |
| Challenger Asuncion | 03/18 22:00 | 19 | Nicolas Zanellato v Wilson Leite | 6-3,7-5 | |
| Challenger Asuncion | 03/17 22:15 | 14 | [490] Nicolas Zanellato v Johannes Ingildsen [264] | 6-1,7-5 | |
| Challenger Santiago | 03/11 15:30 | 19 | Gabi Adrian Boitan v Nicolas Zanellato | 6-4,6-1 | |
| Challenger Santiago | 03/10 18:15 | 14 | [118] Marcelo Zormann v Nicolas Zanellato [490] | Retired | |
| ITF M25 Tucuman | 03/01 14:00 | 27 | [335] Pedro Sakamoto v Nicolas Zanellato [492] | 6-1,7-5 | |
| ITF M25 Tucuman | 02/29 19:10 | 26 | [492] Nicolas Zanellato v Alex Barrena [413] | Retired | |
| ITF M25 Tucuman | 02/27 19:15 | 25 | Nicolas Zanellato v Leonardo Aboian | Retired | |
| ITF M15 Villa Maria | 02/20 15:00 | 25 | Mariano Kestelboim v Nicolas Zanellato | 6-2,6-4 | |
| ITF M25 Punta del Este | 02/14 12:50 | 25 | Matias Franco Descotte v Nicolas Zanellato | 7-6,0-6,7-5 | |
| ITF M25 Punta del Este | 02/08 15:50 | 26 | Federico A Cardozo v Nicolas Zanellato | 3-6,6-3,6-4 | |
| ITF M25 Punta del Este | 02/06 17:25 | 25 | Nicolas Zanellato v Matias Franco Descotte | 7-5,6-1 | |
| Challenger Piracicaba | 01/30 13:00 | 25 | [492] Nicolas Zanellato v Mateus D C C Alves [402] | 5-7,2-6 | |
| ITF M15 Concepcion | 12/07 14:00 | 26 | Diego F Flores v Nicolas Zanellato | 6-4,4-6,7-5 | |
| ITF M15 Concepcion | 12/06 15:35 | 25 | Brandon Perez v Nicolas Zanellato | 4-6,1-6 | |
| ITF M15 Santa Cruz | 12/02 19:50 | 28 | [412] Igor Gimenez v Nicolas Zanellato [472] | 7-5,4-6,6-2 | |
| ITF M15 Santa Cruz | 12/01 21:00 | 27 | [431] Tomas Farjat v Nicolas Zanellato [472] | 3-6,4-6 | |
| ITF M15 Santa Cruz | 11/30 19:00 | 26 | Juan Estevez v Nicolas Zanellato | 5-7,1-6 | |
| ITF M15 Santa Cruz | 11/28 19:00 | 25 | [394] Noah Schachter v Nicolas Zanellato [472] | 6-7,6-3,2-6 | |
| ITF M15 Santa Cruz | 11/21 16:55 | 25 | Giuseppe La Vela v Nicolas Zanellato | 7-6,6-4 | |
| Challenger Guayaquil | 10/30 15:00 | 19 | [403] Gerard Campana Lee v Nicolas Zanellato [475] | 6-3,6-4 | |
| Challenger Guayaquil | 10/29 15:00 | 14 | Marcos L C Baratau v Nicolas Zanellato | 0-6,3-6 | |
| Challenger Curitiba | 10/24 17:35 | 25 | [477] Nicolas Zanellato v Francisco Comesana [120] | 4-6,4-6 | |
| Challenger Curitiba | 10/23 13:00 | 19 | [477] Nicolas Zanellato v Ignacio Buse [458] | 4-6,6-4,6-0 | |
| Challenger Curitiba | 10/22 14:35 | 14 | [480] Nicolas Zanellato v Paulo A S D Santos [435] | 3-6,6-4,6-2 |