Challenger de São Leopoldo 03/28 14:00 26 [185] Genaro Alberto Olivieri v Adolfo Daniel Vallejo [472] 1-6,4-6
Challenger de São Leopoldo 03/25 18:00 25 [472] Adolfo Daniel Vallejo v Liam Draxl [257] 6-2,5-7,7-5
Challenger de Asunción 03/20 20:40 26 [472] Adolfo Daniel Vallejo v Roman Andres Burruchaga [161] 4-6,7-6,2-6
Challenger de Asunción 03/19 21:40 25 [264] Renzo Olivo v Adolfo Daniel Vallejo [472] Retired
Challenger de Santa Cruz 03/04 22:30 25 [127] Camilo Ugo Carabelli v Adolfo Daniel Vallejo [463] Retired
ITF M25 Tucumán 02/28 15:15 25 Joaquin Aguillar Cardozo v Daniel Vallejo 7-6,6-1
ITF M25 Punta del Este 02/15 13:00 26 [467] Juan Bautista Otegui v Adolfo Daniel Vallejo [491] 3-6,6-1,6-2
ITF M25 Punta del Este 02/14 13:00 25 [491] Adolfo Daniel Vallejo v Eduardo Ribeiro [401] 6-1,7-5
ITF M25 Punta del Este 02/10 13:00 28 [293] Murkel Dellien v Daniel Vallejo [490] 6-4,4-6,6-4
ITF M25 Punta del Este 02/09 14:00 27 [311] Alvaro G Meza v Daniel Vallejo [490] 6-1,2-6,1-6
ITF M25 Punta del Este 02/08 12:55 26 [490] Daniel Vallejo v Matheus P De Almeida [317] 5-7,6-3,6-1
ITF M25 Punta del Este 02/07 15:45 25 Daniel Vallejo v Wilson Leite 6-2,6-0
Copa Davis 02/04 20:55 4 [479] Adolfo Daniel Vallejo v Valentin Vacherot [171] 7-6,4-6,4-6
Challenger Buenos Aires 01/08 15:15 19 [472] Adolfo Daniel Vallejo v Gonzalo Villanueva [440] 2-6,4-6
Challenger Buenos Aires 01/07 15:15 14 [376] Federico Agustin Gomez v Adolfo Daniel Vallejo [472] 7-6,1-6,1-6
Challenger de Brasilia 11/19 15:45 14 Fernando Romboli v Adolfo Daniel Vallejo 3-6,6-3,7-6
Challenger de Montevideo 11/12 20:10 14 [448] Adolfo Daniel Vallejo v Alvaro G Meza [339] 6-3,4-6,6-7
Challenger de Lima 11/07 19:00 25 [109] Alejandro Tabilo v Adolfo Daniel Vallejo [448] 6-4,6-1
Challenger de Santa Fe 10/17 13:00 25 [122] Vit Kopriva v Adolfo Daniel Vallejo [461] 6-0,0-6,6-3
Challenger de Santa Fe 10/16 15:50 19 [461] Adolfo Daniel Vallejo v Gonzalo Lama [407] 6-1,6-2
Challenger de Santa Fe 10/15 16:05 14 [296] Renzo Olivo v Adolfo Daniel Vallejo [454] 1-6,1-6
Challenger Buenos Aires 10/08 13:00 14 [266] Murkel Dellien v Adolfo Daniel Vallejo [454] 7-6,5-7,6-0
Challenger de Antofagasta 09/18 17:00 25 [306] Matheus P De Almeida v Adolfo Daniel Vallejo [447] 6-2,2-6,6-1
Challenger de Santa Cruz 09/13 00:35 25 Juan C P Angelo v Adolfo Daniel Vallejo 6-3,6-1
ITF M15 Buenos Aires 09/01 15:25 27 Lautaro Midon v Daniel Vallejo 6-3,6-4
ITF M15 Buenos Aires 08/31 15:10 26 Fermin Tenti v Daniel Vallejo 3-6,6-4,3-6
ITF M15 Buenos Aires 08/29 13:00 25 Gonzalo Zeitune v Daniel Vallejo 4-6,1-6
Challenger de Lima 08/23 22:00 26 Adolfo Daniel Vallejo v Ignacio Buse 5-7,6-7
Challenger de Lima 08/22 01:15 25 [453] Adolfo Daniel Vallejo v Pedro Boscardin Dias [485] 6-2,6-4
Challenger de Cary 08/10 21:30 26 [205] Tung-Lin Wu v Adolfo Daniel Vallejo [469] 6-1,3-6,6-1