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