Round: 44 Ground: Hardcourt outdoor
| Tulsa, Singles Main, M-ITF-USA-16A | 2019/06/17 15:00 | Simon Freund v Zapata, Sebastian | 6-1,6-0 |
| ITF M25 Wichita | 2019/06/10 15:00 | Zapata, Sebastian v Beren, Samuel | 1-6,4-6 |
| ITF M15 Champaign | 2019/06/03 15:00 | Knight, Alexander v Zapata, Sebastian | 6-1,6-1 |
| ITF - M15 Kalmar | 2019/05/13 13:15 | Ruzgas, Marius v Zapata, Sebastian | 6-1,6-1 |
| Karlskrona, Singles Qualifying M-ITF-SWE-01A | 2019/05/06 09:05 | Arvid Nordquist v Zapata, Sebastian | 6-0,6-1 |
| ITF - M25 Bakersfield | 2019/03/11 17:00 | Ryan Peniston v Zapata, Sebastian | 6-2,6-0 |
| ITF USA F31 | 2018/11/11 17:00 | Zapata, Sebastian v Bernhard, Taine | 4-6,1-6 |
| ITF USA F30 | 2018/11/02 15:30 | Zapata, Sebastian v Kaplja, Aljaz Jakob | 1-6,7-5,2-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/10/27 09:00 | Gupta, Koonwar v Crespi, Nicolo | 7-5,2-6,13-15 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/10/20 08:00 | Gupta, Koonwar v Minc, Charles | 1-6,1-6 |
| ITF M15 Getafe Madrid | 2019/10/13 13:00 | Johannson-Holm, Jakob v Gupta, Koonwar | 6-1,6-0 |
| ITF M15 Sabadell | 2019/09/29 09:30 | Alcalde, Juan Ignacio v Gupta, Koonwar | 6-1,7-5 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/17 10:00 | Gupta, Koonwar v Arh, Anze | 3-6,2-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/10 08:00 | Gupta, Koonwar v Recci, Mason | 2-6,1-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/03 08:00 | Alexis Gautier v Gupta, Koonwar | 6-0,6-1 |
| Antalya, Singles Qualifying W-ITF-TUR-18A | 2019/05/06 11:30 | Wakita, Shunsuke v Gupta, Koonwar | 6-3,6-2 |