| Challenger Campinas | 11/28 15:00 | 64 | [388] Camilo Ugo Carabelli v Arguello, Facundo [351] | 6-2,6-3 | |
| Challenger Sao Paulo | 11/23 13:30 | 25 | [350] Arguello, Facundo v Quiroz, Roberto [295] | 7-6,3-6,1-6 | |
| Hurlingham, Singles Qualifying M-ITF-ARG-02A | 03/06 13:00 | 27 | [371] Juan Manuel Cerundolo v Arguello, Facundo [341] | 6-4,6-4 | |
| Hurlingham, Singles Qualifying M-ITF-ARG-02A | 03/05 15:00 | 26 | [465] Mariano Kestelboim v Arguello, Facundo [341] | 3-6,2-6 | |
| Hurlingham, Singles Qualifying M-ITF-ARG-02A | 03/04 18:50 | 25 | Roman A Burruchaga v Arguello, Facundo | 6-4,3-6,1-6 | |
| ITF M25 Rio Cuarto | 02/28 17:30 | 27 | [330] Tomas Martin Etcheverry v Arguello, Facundo [342] | 6-2,1-6,7-6 | |
| ITF M25 Rio Cuarto | 02/27 23:00 | 26 | Hidalgo, Gabriel Alejandro v Arguello, Facundo | 3-6,2-6 | |
| ITF M25 Rio Cuarto | 02/26 18:35 | 25 | Mariano Navone v Arguello, Facundo | 3-6,6-2,1-6 | |
| ITF - M25 Punta del Este | 02/19 17:30 | 26 | [387] Arguello, Facundo v Franco Agamenone [434] | 2-6,6-2,3-6 | |
| ITF - M25 Punta del Este | 02/18 16:45 | 25 | [387] Arguello, Facundo v Cuevas, Martin [490] | 6-1,6-1 | |
| ITF M25 Lima | 02/16 15:55 | 29 | [389] Arguello, Facundo v Marcelo Tomas Barrios Vera [346] | 6-2,6-4 | |
| ITF M25 Lima | 02/15 15:00 | 28 | [292] Pedro Sakamoto v Arguello, Facundo [389] | 6-3,4-6,3-6 | |
| ITF M25 Lima | 02/14 16:00 | 27 | [331] Alvarez, Nicolas v Arguello, Facundo [389] | 4-6,3-6 | |
| ITF M25 Lima | 02/13 16:00 | 26 | Sorgi, Joao Pedro v Arguello, Facundo | 1-6,2-6 | |
| ITF M25 Lima | 02/12 16:00 | 25 | Ricardo Rodriguez v Arguello, Facundo | 6-7,0-6 | |
| ITF M25 Lima | 02/06 15:00 | 26 | Arguello, Facundo v Malla, Bastian | 3-6,4-6 | |
| ITF M25 Lima | 02/05 16:10 | 25 | Arguello, Facundo v Panta Herreros, Jorge Brian | 6-4,6-1 | |
| Challenger - Punta del Este | 01/27 19:40 | 24 | [296] Arguello, Facundo v Tomas Martin Etcheverry [340] | 3-6,3-6 | |
| Challenger Sibiu | 09/17 09:05 | 25 | [217] Arguello, Facundo v Vit Kopriva [369] | 5-7,1-6 | |
| Challenger Szczecin | 09/12 11:00 | 26 | [137] Taro Daniel v Arguello, Facundo [181] | 6-2,6-4 | |
| Challenger Szczecin | 09/11 11:30 | 25 | Kolasinski, Filip v Arguello, Facundo | 4-6,6-7 | |
| Genoa, Italy | 09/02 13:50 | 24 | [233] Mohamed Safwat v Arguello, Facundo [172] | 4-6,6-2,6-0 | |
| Gstaad, Switzerland | 07/20 09:00 | 64 | Gian Marco Moroni v Arguello, Facundo | Cancelled | |
| ATP Bastad | 07/16 10:30 | 25 | [71] Londero, Juan Ignacio v Arguello, Facundo [181] | 6-3,6-2 | |
| ATP Bastad | 07/15 09:00 | 164 | [181] Arguello, Facundo v Steven Diez [217] | 6-4,3-6,6-3 | |
| ATP Bastad | 07/14 10:00 | 64 | [178] Arguello, Facundo v Eriksson, Markus [445] | 7-6,6-1 | |
| Wimbledon, London, Great Britain | 06/24 16:00 | 44 | [232] Kavcic, Blaz v Arguello, Facundo [180] | 6-3,7-6 | |
| Challenger Blois | 06/22 13:40 | 28 | [165] Kimmer Coppejans v Arguello, Facundo [195] | 2-6,7-5,6-4 | |
| Challenger Blois | 06/21 16:15 | 27 | [195] Arguello, Facundo v Tatlot, Johan Sebastien [288] | 6-4,6-0 | |
| Challenger Blois | 06/20 13:30 | 26 | [402] Geoffrey Blancaneaux v Arguello, Facundo [195] | 6-4,4-6,3-6 |