Stadium: Center Court Round: 25 Ground: Hardcourt outdoor
| Challenger Launceston | 2019/01/28 23:00 | Jacob Grills v Alessandro Bega | 6-7,6-2,6-3 |
| Challenger Burnie | 2019/01/22 00:25 | Jacob Grills v Mohamed Safwat | 4-6,2-6 |
| Challenger Burnie | 2019/01/21 02:55 | Jacob Grills v Enrique Lopez-Perez | 6-2,6-1 |
| Challenger Canberra | 2019/01/06 01:25 | Tomas Barrios Vera v Jacob Grills | 6-3,6-3 |
| Australian Open WC | 2018/12/09 23:00 | Jacob Grills v Akira Santillan | 1-6,5-7,4-6 |
| Challenger Kobe | 2018/11/12 02:00 | Jacob Grills v Tung-Lin Wu | 2-6,4-6 |
| Challenger Kobe | 2018/11/11 03:35 | Jacob Grills v Issei Okamura | 1-6,6-4,6-3 |
| Challenger Kobe | 2018/11/10 04:40 | Jacob Grills v Matej Sabanov | 7-6,5-7,6-1 |
| Australian Open | 2019/01/14 03:55 | Tatsuma Ito v Daniel Evans | 5-7,1-6,6-7 |
| Australian Open | 2019/01/11 02:35 | Lorenzo Sonego v Tatsuma Ito | 6-7,6-0,6-7 |
| Australian Open | 2019/01/10 05:25 | Nicola Kuhn v Tatsuma Ito | 3-6,3-6 |
| Australian Open | 2019/01/08 23:00 | Tatsuma Ito v Simone Bolelli | 6-3,3-6,6-3 |
| Challenger Playford | 2019/01/01 02:40 | Tatsuma Ito v Aleksandr Nedovyesov | 5-7,4-6 |
| Challenger Kobe | 2018/11/18 04:30 | Yosuke Watanuki v Tatsuma Ito | 6-3,5-7,3-6 |
| Challenger Kobe | 2018/11/17 03:00 | Yasutaka Uchiyama v Tatsuma Ito | 6-4,0-6,4-6 |
| Challenger Kobe | 2018/11/16 04:45 | Yunseong Chung v Tatsuma Ito | 2-6,3-6 |