Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| Challenger Shanghai | 2019/09/10 04:00 | Aleksandar Vukic v Collin Altamirano | 4-6,6-7 |
| Challenger Shanghai | 2019/09/09 05:45 | Collin Altamirano v Xin Gao | 6-1,6-1 |
| Challenger Jinan | 2019/09/02 04:30 | Di Wu v Collin Altamirano | 6-4,6-4 |
| Challenger Lexington | 2019/07/31 19:20 | Collin Altamirano v Roy Smith | 4-6,7-6,2-6 |
| Challenger Binghamton | 2019/07/25 15:55 | Dudi Sela v Collin Altamirano | 6-4,7-5 |
| Challenger Binghamton | 2019/07/24 14:00 | Collin Altamirano v Jeffrey John Wolf | 6-2,7-5 |
| Challenger Binghamton | 2019/07/23 16:25 | Lloyd Glasspool v Collin Altamirano | 1-6,6-7 |
| Challenger Gatineau | 2019/07/15 17:35 | Collin Altamirano v Brandon Holt | 1-6,6-7 |
| Challenger Shanghai | 2019/09/10 08:35 | Mukund Sasikumar v Tatsuma Ito | 4-6,4-6 |
| Challenger Jinan | 2019/09/05 04:35 | Tatsuma Ito v Teymuraz Gabashvili | 5-7,3-6 |
| Challenger Jinan | 2019/09/03 07:05 | Tatsuma Ito v Baptiste Crepatte | 6-4,6-0 |
| US Open | 2019/08/20 19:40 | Sumit Nagal v Tatsuma Ito | 7-6,6-2 |
| Challenger Yokkaichi | 2019/08/10 04:25 | Tatsuma Ito v James Duckworth | 3-6,4-6 |
| Challenger Yokkaichi | 2019/08/09 04:30 | Saketh Myneni v Tatsuma Ito | 6-7,1-6 |
| Challenger Yokkaichi | 2019/08/08 08:10 | Shinji Hazawa v Tatsuma Ito | 0-6,3-6 |
| Challenger Yokkaichi | 2019/08/07 08:15 | Kento Takeuchi v Tatsuma Ito | 6-7,1-6 |