Stadium: Court 3 Round: 62 Ground: Clay
| ITF Argentina F5 | 2018/09/10 12:00 | Julian Gimenez v Alan Postay | 6-4,7-5 |
| ITF Argentina F4 | 2018/09/03 12:00 | Mateo Galdon v Alan Postay | 6-4,7-5 |
| ITF Argentina F4 | 2018/09/02 13:00 | Benjamin L Ambrosio v Alan Postay | 6-2,0-6,4-6 |
| ITF Argentina F4 | 2018/09/01 12:00 | Nicolas Agustin Lema v Alan Postay | 4-6,2-6 |
| ITF Ecuador F2 Qual | 2018/07/30 15:00 | Alan Postay v Julian Gimenez | 4-6,3-6 |
| ITF Ecuador F2 Qual | 2018/07/29 15:00 | Gabriel A Yaguar Espinoza v Alan Postay | 4-6,6-2,6-7 |
| ITF Ecuador F1 | 2018/07/24 19:45 | Alan Postay v Maximiliano Estevez | 3-6,2-6 |
| ITF Ecuador F1 Qual | 2018/07/23 16:00 | Alan Postay v Raul Moreano Chan | 6-1,6-0 |
| ITF Argentina F3 | 2018/05/28 15:00 | Tomas Martin Etcheverry v Ryusei Makiguchi | 6-3,6-3 |
| ITF Argentina F2 | 2018/05/22 13:00 | Ryusei Makiguchi v Juan Carlos Saez | 1-6,2-6 |
| ITF Argentina F1 | 2018/05/14 15:00 | Ryusei Makiguchi v Juan Carlos Saez | 2-6,5-7 |
| ITF Brazil F2 | 2018/05/01 20:35 | Ryusei Makiguchi v Camilo Ugo Carabelli | 2-6,0-6 |
| ITF Brazil F1 | 2018/04/25 18:15 | Wilson Leite v Ryusei Makiguchi | 6-4,5-7,6-4 |
| ITF Brazil F1 | 2018/04/23 16:35 | Ryusei Makiguchi v Caio Silva | 6-1,6-7,7-5 |
| ITF Italy F6 Qual | 2018/04/01 12:00 | Paul Woerner v Ryusei Makiguchi | 6-4,6-4 |
| ITF Italy F6 Qual | 2018/03/31 12:00 | Ryusei Makiguchi v Stefano Reitano | 7-5,6-2 |