| Costa do Sauipe challenger | Round | Result | H | A | 
		
			| 26.10. |  | Burruchaga R. - Vallejo A. | F | 6-1, 6-2 | 1.45 | 2.63 | 
		
			| 26.10. |  | Vallejo A. - Garin C. | SF | 6-4, 0-0 | 2.06 | 1.71 | 
		
			| 25.10. |  | Vallejo A. - Tirante T. | QF | 6-4, 6-2 | 2.39 | 1.53 | 
		
			| 24.10. |  | Vallejo A. - Pucinelli De Almeida M. | R16 | 6-4, 6-2 | 1.48 | 2.51 | 
		
			| 23.10. |  | Vallejo A. - Gimenez I. | 1R | 6-0, 6-2 | 1.13 | 5.50 | 
		
			| Curitiba challenger | Round | Result | H | A | 
		
			| 19.10. |  | Vallejo A. - Boscardin Dias P. | F | 6-3, 7-5 | 1.36 | 3.02 | 
		
			| 18.10. |  | Vallejo A. - Schiessl J. | SF | 6-4, 6-4 | 1.28 | 3.52 | 
		
			| 17.10. |  | Vallejo A. - Barrios Vera M. | QF | 6-3, 62-7, 6-3 | 2.50 | 1.50 | 
		
			| 15.10. |  | Vallejo A. - Soto M. | R16 | 6-3, 6-2 | 1.28 | 3.52 | 
		
			| 13.10. |  | Vallejo A. - Nava E. | 1R | 6-2, 6-3 | 2.87 | 1.39 | 
		
			| Cali challenger | Round | Result | H | A | 
		
			| 07.10. |  | Ambrogi L. - Vallejo A. | 1R | 6-4, 6-4 | 3.00 | 1.36 | 
		
			| Antofagasta challenger | Round | Result | H | A | 
		
			| 04.10. |  | Garin C. - Vallejo A. | SF | 7-65, 6-2 | 1.47 | 2.54 | 
		
			| 03.10. |  | Vallejo A. - Barrios Vera M. | QF | 6-3, 6-2 | 2.61 | 1.46 | 
		
			| 01.10. |  | Vallejo A. - Thanos A. | R16 | 6-3, 6-3 | 1.37 | 2.94 | 
		
			| 29.09. |  | Vallejo A. - Collarini A. | 1R | 1-6, 6-1, 6-2 | 1.85 | 1.85 | 
		
			| Buenos Aires challenger | Round | Result | H | A | 
		
			| 25.09. |  | Olivieri G. - Vallejo A. | R16 | 6-3, 6-2 | 2.19 | 1.62 | 
		
			| 23.09. |  | Vallejo A. - Tirante T. | 1R | 6-3, 6-4 | 3.76 | 1.25 | 
		
			| Futures 2025 | Round | Result | H | A | 
		
			| 20.09. |  | Vallejo A. - Heide G. | F | 6-4, 4-6, 6-3 | 2.26 | 1.57 | 
		
			| 19.09. |  | Vallejo A. - Sakamoto P. | SF | 6-1, 7-60 | 1.34 | 3.01 | 
		
			| 18.09. |  | Vallejo A. - Price Pelaez S. | QF | 6-0, 6-0 | 1.03 | 9.30 | 
		
			| 17.09. |  | Vallejo A. - Rodrigues N. | R16 | 6-4, 4-6, 6-1 | 1.03 | 8.92 | 
		
			| 16.09. |  | Vallejo A. - Cunha Winheski de Lima V. | 1R | 6-2, 6-4 | 1.01 | 13.33 | 
		
			| 06.09. |  | Vallejo A. - Midon L. | F | 7-64, 6-3 | 1.83 | 1.87 | 
		
			| 05.09. |  | Vallejo A. - Varillas J. | SF | 6-1, 7-62 | 2.03 | 1.70 | 
		
			| 04.09. |  | Vallejo A. - Cavallo F. | QF | 6-1, 6-2 | 1.05 | 8.19 | 
		
			| 03.09. |  | Vallejo A. - Del Pino M. | R16 | 6-2, 6-1 | 1.07 | 6.92 | 
		
			| 02.09. |  | Vallejo A. - Aboian L. | 1R | 3-6, 6-1, 6-0 | 1.09 | 6.03 | 
		
			| Zug challenger | Round | Result | H | A | 
		
			| 24.07. |  | Diaz Acosta F. - Vallejo A. | R16 | 7-65, 6-2 | 1.22 | 3.99 | 
		
			| 22.07. |  | Vallejo A. - Mena F. | 1R | 6-1, 6-2 | 1.74 | 1.97 | 
		
			| Bundesliga - men | Round | Result | H | A | 
		
			| 20.07. |  | Vallejo A. - Coria F. |  | 6-4, 6-1 |  |  | 
		
			| San Marino challenger | Round | Result | H | A | 
		
			| 17.07. |  | Neumayer L. - Vallejo A. | R16 | 6-2, 3-6, 6-4 | 1.42 | 2.74 | 
		
			| 15.07. |  | Vallejo A. - Basile P. | 1R | 6-3, 6-3 | 1.83 | 1.90 | 
		
			| Bundesliga - men | Round | Result | H | A | 
		
			| 11.07. |  | Cachin P. - Vallejo A. |  | 6-4, 3-6, 10-2 |  |  | 
		
			| Iasi challenger | Round | Result | H | A | 
		
			| 07.07. |  | Meligeni Rodrigues Alves F. - Vallejo A. | 1R | 7-610, 6-3 | 1.48 | 2.54 | 
		
			| Poznan challenger | Round | Result | H | A | 
		
			| 18.06. |  | Giustino L. - Vallejo A. | R16 | 6-3, 3-6, 6-3 | 1.59 | 2.28 | 
		
			| 16.06. |  | Vallejo A. - Mena F. | 1R | 6-3, 3-1 | 1.93 | 1.77 | 
		
			| Lyon challenger | Round | Result | H | A | 
		
			| 12.06. |  | Hsu Y. - Vallejo A. | R16 | 6-4, 6-1 | 2.50 | 1.49 | 
		
			| 10.06. |  | Vallejo A. - Martineau M. | 1R | 7-5, 7-5 | 1.77 | 1.96 | 
		
			| Prostejov challenger | Round | Result | H | A | 
		
			| 03.06. |  | Tseng C. - Vallejo A. | 1R | 7-62, 6-1 | 1.23 | 3.86 | 
		
			| Vicenza challenger | Round | Result | H | A | 
		
			| 28.05. |  | Ajdukovic D. - Vallejo A. | R16 | 7-5, 6-4 | 1.60 | 2.23 | 
		
			| 27.05. |  | Vallejo A. - Durasovic V. | 1R | 64-7, 6-3, 7-66 | 1.45 | 2.61 | 
		
			| Tallahassee chall. | Round | Result | H | A | 
		
			| 14.04. |  | Andrade A. - Vallejo A. | 1R | 6-2, 6-3 | 1.79 | 1.95 | 
		
			| Sarasota challenger | Round | Result | H | A | 
		
			| 08.04. |  | Montes-De La Torre I. - Vallejo A. | 1R | 6-4, 6-2 | 1.82 | 1.91 | 
		
			| Concepcion challenger | Round | Result | H | A | 
		
			| 25.03. |  | Kicker N. - Vallejo A. | 1R | 6-1, 6-1 | 2.60 | 1.45 | 
		
			| Asuncion challenger | Round | Result | H | A | 
		
			| 22.03. |  | Nava E. - Vallejo A. | SF | 6-4, 6-2 | 1.61 | 2.23 | 
		
			| 21.03. |  | Vallejo A. - Galan D. | QF | 6-2, 6-2 | 2.78 | 1.40 | 
		
			| 20.03. |  | Vallejo A. - Roncadelli F. | R16 | 6-2, 6-3 | 1.22 | 3.97 | 
		
			| 18.03. |  | Vallejo A. - Rodriguez Taverna S. | 1R | 6-3, 7-65 | 1.37 | 2.92 | 
		
			| Santiago challenger | Round | Result | H | A | 
		
			| 11.03. |  | Feldbausch K. - Vallejo A. | 1R | 6-2, 6-2 | 1.85 | 1.88 | 
		
			| Cordoba challenger | Round | Result | H | A | 
		
			| 05.03. |  | Galan D. - Vallejo A. | R16 | 4-6, 7-65, 7-5 | 1.46 | 2.59 | 
		
			| 03.03. |  | Vallejo A. - Dutra da Silva D. | 1R | 6-4, 6-1 | 1.21 | 4.12 | 
		
			| Santiago | Round | Result | H | A | 
		
			| 22.02. |  | Ficovich J. - Vallejo A. | Q-R16 | 6-2, 6-3 | 1.88 | 1.86 | 
		
			| Futures 2025 | Round | Result | H | A | 
		
			| 16.02. |  | Vallejo A. - Ambrogi L. | F | 6-1, 6-4 | 1.37 | 2.85 | 
		
			| 15.02. |  | Vallejo A. - Rodriguez Taverna S. | SF | 5-7, 7-64, 6-2 | 1.65 | 2.11 | 
		
			| 15.02. |  | Vallejo A. - Olivo R. | QF | 6-2, 6-2 | 1.39 | 2.74 | 
		
			| 14.02. |  | Vallejo A. - Carou I. | R16 | 6-2, 7-5 | 1.05 | 8.63 | 
		
			| 13.02. |  | Vallejo A. - Zarate C. | 1R | 6-1, 1-6, 6-3 | 1.01 | 10.63 | 
		
			| Rosario challenger | Round | Result | H | A | 
		
			| 04.02. |  | Pellegrino A. - Vallejo A. | 1R | 6-4, 6-2 | 2.08 | 1.70 | 
		
			| 03.02. |  | Schwaerzler J. - Vallejo A. | Q-R16 | 3-6, 7-5, 6-2 | 2.39 | 1.53 | 
		
			| 02.02. |  | Vallejo A. - Ambrogi L. | Q-1R | 4-6, 6-2, 6-2 | 1.46 | 2.56 | 
		
			| Punta del Este 2 challenger | Round | Result | H | A | 
		
			| 21.01. |  | Nava E. - Vallejo A. | 1R | 3-6, 6-3, 6-2 | 1.68 | 2.11 | 
		
			| Buenos Aires 3 challenger | Round | Result | H | A | 
		
			| 20.01. |  | Varillas J. - Vallejo A. | F | 6-4, 6-4 | 1.51 | 2.46 | 
		
			| 18.01. |  | Vallejo A. - Guillen Meza A. | SF | 7-5, 6-2 | 1.88 | 1.84 | 
		
			| 17.01. |  | Vallejo A. - Villanueva G. | QF | 3-6, 6-3, 6-4 | 1.46 | 2.60 | 
		
			| 16.01. |  | Vallejo A. - Olivieri G. | R16 | 6-3, 6-4 | 1.75 | 2.01 | 
		
			| 14.01. |  | Vallejo A. - Olivo R. | 1R | 6-4, 6-2 | 1.45 | 2.63 |