| Challenger Blois | 06/18 09:10 | 25 | [375] Arthur Rinderknech v Arguello, Facundo [195] | 2-6,6-2,1-6 | |
| Challenger - Lyon | 06/13 09:30 | 26 | [202] Arguello, Facundo v Mohamed Safwat [248] | 4-6,4-6 | |
| Challenger - Lyon | 06/12 12:20 | 25 | [422] Hugo Grenier v Arguello, Facundo [202] | 4-6,3-6 | |
| Challenger - Lyon | 06/10 11:40 | 24 | [412] Corentin Denolly v Arguello, Facundo [202] | 4-6,4-6 | |
| Poznan, Poland | 06/03 13:30 | 24 | [203] Arguello, Facundo v Norbert Gombos [199] | 7-6,6-7,6-7 | |
| Challenger - Vicence | 05/30 10:00 | 24 | [349] Benjamin Hassan v Arguello, Facundo [203] | 1-6,6-1,6-3 | |
| Open de France | 05/22 13:55 | 45 | [104] Henri Laaksonen v Arguello, Facundo [208] | 4-6,6-4,6-3 | |
| Open de France | 05/20 10:25 | 44 | [208] Arguello, Facundo v Baldi, Filippo [163] | 3-6,6-3,6-2 | |
| Lisbon, Portugal | 05/13 11:00 | 24 | Cacao, Tiago v Arguello, Facundo | 2-6,6-2,6-1 | |
| Challenger - Francavilla | 04/24 13:05 | 25 | [212] Bellucci, Thomaz v Arguello, Facundo [203] | 7-6,6-2 | |
| Challenger - Tunis | 04/19 13:20 | 27 | [212] Arguello, Facundo v Lorenzo Giustino [173] | 6-2,3-6,4-6 | |
| Challenger - Tunis | 04/18 13:30 | 26 | [326] Skander Mansouri v Arguello, Facundo [212] | 5-7,3-6 | |
| Challenger - Tunis | 04/17 10:55 | 25 | [299] Brkic, Tomislav v Arguello, Facundo [212] | 4-6,3-6 | |
| Challenger Murcia | 04/10 12:40 | 25 | [262] Vilella Martinez, Mario v Arguello, Facundo [190] | 6-1,6-4 | |
| Alicante, Spain | 04/01 16:00 | 24 | [188] Arguello, Facundo v Gimeno-Traver, Daniel [183] | 4-6,6-3,2-6 | |
| Challenger - Santiago | 03/07 14:00 | 26 | [169] Alessandro Giannessi v Arguello, Facundo [195] | 4-6,6-4,6-1 | |
| Challenger - Santiago | 03/05 20:40 | 25 | [411] Souza, Joao Olavo v Arguello, Facundo [195] | 6-4,3-6,4-6 | |
| Sao Paulo, Brazil | 02/23 23:45 | 64 | [285] Federico Coria v Arguello, Facundo [188] | 6-1,6-4 | |
| ATP - Cordoba | 02/02 22:05 | 64 | [114] Lorenzi, Paolo v Arguello, Facundo [193] | 3-6,6-3,6-4 | |
| Challenger - Punta del Este | 01/27 22:00 | 29 | [126] Thiago Monteiro v Arguello, Facundo [228] | 3-6,6-2,6-3 | |
| Challenger - Punta del Este | 01/27 00:40 | 28 | [152] Facundo Bagnis v Arguello, Facundo [228] | 2-6,2-6 | |
| Challenger - Punta del Este | 01/26 01:05 | 27 | [228] Arguello, Facundo v Londero, Juan Ignacio [114] | 7-6,3-6,6-1 | |
| Challenger - Punta del Este | 01/24 17:30 | 26 | [136] Dutra Silva, Rogerio v Arguello, Facundo [228] | 3-6,4-6 | |
| Challenger - Punta del Este | 01/23 19:10 | 25 | Alejandro Tabilo v Arguello, Facundo | 2-6,6-7 | |
| Open d'Australie | 01/08 01:40 | 44 | Arguello, Facundo v Maxime Janvier | Cancelled | |
| Challenger - Buenos Aires | 11/16 22:20 | 27 | [257] Pedro Cachin v Arguello, Facundo [219] | 6-1,4-6,6-4 | |
| Challenger - Buenos Aires | 11/15 19:00 | 26 | [219] Arguello, Facundo v Hugo Dellien [119] | 6-4,6-4 | |
| Challenger - Buenos Aires | 11/14 01:50 | 25 | Arguello, Facundo v Renzo Olivo | 6-1,6-2 | |
| Montevideo, Uruguay | 11/09 20:00 | 27 | [239] Arguello, Facundo v Berlocq, Carlos [127] | 3-6,6-3,5-7 | |
| Montevideo, Uruguay | 11/08 20:40 | 26 | [101] Andujar, Pablo v Arguello, Facundo [239] | 6-7,5-7 |