| 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 17:30 | - | Facundo Arguello v Renzo Olivo | 6-1,6-2 | |
| Challenger Montevideo | 11/09 20:00 | - | [239] Facundo Arguello v Carlos Berlocq [127] | 3-6,6-3,5-7 | |
| Challenger Montevideo | 11/08 20:40 | - | [101] Pablo Andujar v Facundo Arguello [239] | 6-7,5-7 | |
| Challenger Montevideo | 11/06 19:20 | - | [239] Facundo Arguello v Arthur De Greef [232] | 5-7,6-3,6-3 | |
| Challenger Guayaquil | 11/01 20:30 | - | [245] Facundo Arguello v Pedro Sousa [124] | 6-7,3-6 | |
| Challenger Guayaquil | 10/31 16:00 | 26 | [324] Ulises Blanch v Facundo Arguello [245] | 4-6,1-6 | |
| Challenger Guayaquil | 10/30 15:30 | 25 | [245] Facundo Arguello v Guilherme Clezar [240] | 4-6,6-2,6-1 | |
| Challenger Lima | 10/26 21:00 | 28 | [138] Pedro Sousa v Facundo Arguello [269] | 7-6,6-3 | |
| Challenger Lima | 10/25 17:00 | 27 | [253] Jose Hernandez-Fernandez v Facundo Arguello [269] | 1-6,2-6 | |
| Challenger Lima | 10/24 19:20 | 26 | [269] Facundo Arguello v Paolo Lorenzi [114] | 6-4,7-6 | |
| Challenger Lima | 10/23 17:20 | 25 | [331] Juan P Varillas v Facundo Arguello [269] | 4-6,1-6 | |
| Challenger Santo Domingo | 10/07 14:00 | - | [268] Facundo Arguello v Alejandro Gomez [485] | 3-6,6-1,3-6 | |
| Challenger Campinas | 10/02 13:00 | - | [349] Alejandro Gonzalez v Facundo Arguello [268] | 6-3,7-6 | |
| Challenger Biella | 09/21 09:00 | - | [280] Facundo Arguello v Federico Delbonis [101] | 2-6,4-6 | |
| Challenger Biella | 09/20 09:30 | - | [280] Facundo Arguello v Filippo Baldi [247] | 6-4,6-2 | |
| Challenger Biella | 09/18 08:00 | 25 | [157] Gastao Elias v Facundo Arguello [280] | 5-7,0-6 | |
| Challenger Szczecin | 09/15 11:00 | - | [108] Guido Andreozzi v Facundo Arguello [314] | 3-6,7-6,6-4 | |
| Challenger Szczecin | 09/14 12:55 | 27 | [149] Rogerio Dutra Silva v Facundo Arguello [314] | 6-4,3-6,2-6 | |
| Challenger Szczecin | 09/12 15:00 | 26 | Facundo Arguello v Roberto Carballes Baena | 7-6,6-3 | |
| Challenger Szczecin | 09/11 12:15 | - | Facundo Arguello v Nicolas Almagro | Retired | |
| Challenger Szczecin | 09/10 09:00 | - | [335] Roberto Marcora v Facundo Arguello [314] | 6-3,2-6,1-6 |