Round: 25 Ground: Clay
| ITF Colombia F5 | 2015/07/08 17:20 | Alejandro Gomez v Ryusei Makiguchi | 3-6,6-4,6-1 |
| ITF Colombia F4 | 2015/06/29 16:30 | Ryusei Makiguchi v Jose Olivares | 4-6,4-6 |
| ITF Argentina F7 | 2015/05/25 16:30 | Ryusei Makiguchi v R. Urzua-Rivera | 5-7,3-6 |
| ITF Argentina F6 | 2015/05/18 15:00 | Ryusei Makiguchi v Juan Ignacio Ameal | 6-7,4-6 |
| Challenger Cali 2 | 2015/05/05 16:40 | Fernando Romboli v Ryusei Makiguchi | 1-6,6-3,7-5 |
| ITF Argentina F3 | 2015/03/23 14:00 | Ryusei Makiguchi v Federico Coria | 2-6,3-6 |
| ITF Argentina F2 | 2015/03/17 19:30 | Rodrigo Banzer v Ryusei Makiguchi | 3-6,2-6 |
| ITF Argentina F1 | 2015/03/12 15:00 | Nicolas Kicker v Ryusei Makiguchi | 6-4,6-0 |
| ITF Argentina F8 | 2015/08/10 13:30 | Oscar Jose Gutierrez v Federico Moreno | 6-4,7-6 |
| ITF Argentina F8 | 2015/08/08 12:00 | Oscar Jose Gutierrez v Agustin Suarez Gonzalez | 6-1,6-3 |
| ITF Brazil F3 | 2015/06/23 14:30 | Oscar Jose Gutierrez v Rafael Camilo | 3-6,6-0,4-6 |
| ITF Brazil F3 | 2015/06/21 18:30 | Oscar Jose Gutierrez v Federico Moreno | 6-3,2-6,6-1 |
| ITF Brazil F2 | 2015/06/19 15:40 | Thales Turini v Oscar Jose Gutierrez | 7-6,6-3 |
| ITF Brazil F2 | 2015/06/18 17:55 | Oscar Jose Gutierrez v Andre Miele | 6-1,6-4 |
| ITF Brazil F2 | 2015/06/17 14:40 | Oscar Jose Gutierrez v Carlos E. Severino | 4-6,7-6,6-1 |
| ITF Brazil F2 | 2015/06/16 12:00 | Oscar Jose Gutierrez v Breno Lodis | 6-1,6-0 |