Stadium: Centre Court Round: 27 Ground: Hardcourt indoor
| Challenger Newport Beach Qual | 2018/01/20 23:30 | Jason Jung v Tom Fawcett | 6-3,5-7,2-6 |
| Australian Open Qual | 2018/01/10 00:50 | Alexey Vatutin v Jason Jung | 6-1,5-7,6-2 |
| Challenger Bangkok | 2018/01/03 04:00 | Evgeny Karlovskiy v Jason Jung | 6-4,6-4 |
| Challenger Bangkok | 2018/01/01 06:40 | Jason Jung v Jurgen Zopp | 6-1,6-2 |
| Challenger Toyota | 2017/11/13 02:00 | Jason Jung v Max Purcell | 4-6,6-3,2-6 |
| Challenger Kobe | 2017/11/08 06:50 | Go Soeda v Jason Jung | 6-3,6-4 |
| Challenger Kobe | 2017/11/07 02:00 | Jason Jung v Omar Jasika | 2-6,6-4,6-4 |
| Challenger Shenzhen 2 | 2017/11/03 02:00 | Radu Albot v Jason Jung | 5-7,6-3,7-5 |
| Australian Open Qual | 2018/01/10 08:50 | Tatsuma Ito v Casper Ruud | 6-4,1-6,4-6 |
| Challenger Bangkok | 2018/01/01 08:00 | Tatsuma Ito v Blaz Rola | 6-7,6-7 |
| Challenger Hua Hin | 2017/11/25 09:35 | Tatsuma Ito v John Millman | 6-7,2-6 |
| Challenger Hua Hin | 2017/11/24 09:20 | Soonwoo Kwon v Tatsuma Ito | 6-1,4-6,4-6 |
| Challenger Hua Hin | 2017/11/23 06:55 | Maverick Banes v Tatsuma Ito | 1-6,6-7 |
| Challenger Hua Hin | 2017/11/22 04:55 | Bradley Mousley v Tatsuma Ito | 6-7,6-7 |
| Challenger Toyota | 2017/11/16 08:00 | Hiroyasu Ehara v Tatsuma Ito | 2-6,1-6 |
| Challenger Toyota | 2017/11/15 03:45 | Stephane Robert v Tatsuma Ito | 3-6,7-5,2-6 |