Stadium: Court 5 Round: 25 Ground: Grass
| Challenger Gwangju | 2017/09/20 01:30 | Bradley Klahn v Tatsuma Ito | 5-7,6-1,3-6 |
| Challenger Shanghai | 2017/09/12 02:00 | Bradley Klahn v Tatsuma Ito | 6-3,2-6,6-7 |
| Challenger Maui | 2017/01/24 20:00 | Tatsuma Ito v Bradley Klahn | 7-5,3-6,3-6 |
| Challenger Nottingham | 2018/06/13 10:00 | Tatsuma Ito v Brayden Schnur | 3-6,6-3,6-7 |
| Challenger Nottingham | 2018/06/12 11:00 | Cameron Norrie v Tatsuma Ito | 6-1,5-7,3-6 |
| Challenger Busan | 2018/05/15 02:00 | Tatsuma Ito v Yasutaka Uchiyama | 2-6,7-6,6-4 |
| Challenger Gimcheon | 2018/05/08 06:15 | Jason Jung v Tatsuma Ito | 6-3,5-7,7-6 |
| Challenger Seoul | 2018/05/05 07:15 | Mackenzie McDonald v Tatsuma Ito | 6-4,7-6 |
| Challenger Seoul | 2018/05/04 05:00 | Tatsuma Ito v Di Wu | 7-5,3-6,6-2 |
| Challenger Seoul | 2018/05/03 01:30 | Tatsuma Ito v Seong Chan Hong | 7-5,6-1 |
| Challenger Seoul | 2018/05/01 07:05 | Tatsuma Ito v Duckhee Lee | 6-1,6-3 |
| ATP Hertogenbosch Qual | 2018/06/09 10:05 | Max Purcell v Bradley Klahn | 6-2,6-2 |
| French Open Qual | 2018/05/22 08:00 | Bradley Klahn v Henri Laaksonen | 6-4,6-7,4-6 |
| Challenger Bordeaux | 2018/05/18 15:00 | Guido Andreozzi v Bradley Klahn | 6-3,6-3 |
| Challenger Bordeaux | 2018/05/17 12:10 | Bradley Klahn v Calvin Hemery | 6-3,7-6 |
| Challenger Bordeaux | 2018/05/15 08:00 | Ugo Humbert v Bradley Klahn | 2-6,2-6 |
| Challenger Aix en Provence | 2018/05/09 09:00 | Bradley Klahn v Thiago Monteiro | 5-7,4-6 |
| Challenger Aix en Provence | 2018/05/07 09:30 | Alexander Bublik v Bradley Klahn | 6-7,6-7 |
| ATP Houston Qual | 2018/04/08 16:00 | Yoshihito Nishioka v Bradley Klahn | 6-2,6-0 |