Stadium: Court 5 Round: 26 Ground: Hardcourt indoor
| Challenger Columbus | 2019/06/11 20:30 | Gonzalez, Alejandro v Nicolas Mejia | 6-2,6-4 |
| Challenger Columbus | 2019/06/10 18:00 | Gonzalez, Alejandro v Aleksandar Kovacevic | 6-4,6-7,6-2 |
| Challenger - Little Rock | 2019/06/04 22:50 | Gonzalez, Alejandro v Alexander Ritschard | 4-6,4-6 |
| Samarkand, Uzbekistan | 2019/05/13 09:25 | Gonzalez, Alejandro v Denis Yevseyev | 3-6,7-6,4-6 |
| Challenger Braga | 2019/05/06 15:20 | Gonzalez, Alejandro v Benjamin Bonzi | 1-6,4-6 |
| Challenger - Savannah | 2019/05/02 18:35 | Gonzalez, Alejandro v Tommy Paul | 6-4,6-7,5-7 |
| Challenger - Savannah | 2019/05/01 17:05 | Emilio Gomez v Gonzalez, Alejandro | 0-6,3-6 |
| Challenger - Savannah | 2019/04/29 21:00 | Gonzalez, Alejandro v Arconada, Jordi | 6-4,6-2 |
| Challenger Columbus | 2019/06/12 16:10 | Nam, Ji Sung v Wolf, Jeffrey John | 6-4,3-6,6-4 |
| Challenger Columbus | 2019/06/10 22:45 | Cannon Kingsley v Nam, Ji Sung | 5-7,4-6 |
| Challenger - Little Rock | 2019/06/04 17:50 | Joao Menezes v Nam, Ji Sung | 5-7,6-1,6-2 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/26 03:00 | Nam, Ji Sung v Sekiguchi, Shuichi | 1-6,4-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/25 03:00 | Nam, Ji Sung v Shintaro Imai | 6-4,7-5 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/24 04:00 | Nam, Ji Sung v Khumoyun Sultanov | 6-3,6-1 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/23 06:00 | Nam, Ji Sung v Tanuma, Ryota | 7-6,6-3 |
| Challenger - Gwangju | 2019/05/14 06:00 | Nam, Ji Sung v Sugita, Yuichi | 2-6,2-6 |