Stadium: Court 3 Round: 166 Ground: Hardcourt outdoor
| Nanchang, China | 2019/04/23 03:00 | Xia, Zihao v Gabashvili, Teimuraz | 2-6,5-7 |
| Anning, China | 2019/04/15 06:20 | Xia, Zihao v Goncalo Oliveira | 2-6,0-6 |
| Zhangjiagang, China | 2019/03/19 04:40 | Xia, Zihao v James Duckworth | 0-6,3-6 |
| Zhangjiagang, China | 2019/03/18 03:10 | Xia, Zihao v Wang, Tak Khunn | 1-6,7-6,6-3 |
| Challenger - Shenzhen | 2019/03/11 03:50 | Xia, Zihao v Duckhee Lee | 3-6,1-6 |
| Challenger Zhuhai | 2019/03/05 02:00 | Xia, Zihao v Max Purcell | 7-6,5-7,1-6 |
| Challenger Yokohama | 2019/02/26 01:00 | Duckhee Lee v Xia, Zihao | 6-0,6-3 |
| Challenger Canberra | 2019/01/06 04:25 | Thomas Fancutt v Xia, Zihao | 6-3,6-2 |
| Nanchang, China | 2019/04/24 03:00 | Jordan Thompson v Grills, Jacob | 6-3,4-6,6-1 |
| Nanchang, China | 2019/04/23 04:20 | Luke Saville v Grills, Jacob | 3-6,4-6 |
| Anning, China | 2019/04/17 02:00 | James Duckworth v Grills, Jacob | 6-3,6-4 |
| Anning, China | 2019/04/16 02:00 | Grills, Jacob v He, Yecong | 6-1,6-4 |
| Anning, China | 2019/04/15 02:00 | Grills, Jacob v Wang, Ruixuan | 6-1,6-0 |
| Mornington, Singles Qualifying M-ITF-AUS-04A | 2019/03/31 04:00 | Grills, Jacob v Christopher O'Connell | 6-7,3-6 |
| Mornington, Singles Qualifying M-ITF-AUS-04A | 2019/03/28 23:00 | Grills, Jacob v Calum Puttergill | 6-2,7-5 |
| Mornington, Singles Qualifying M-ITF-AUS-04A | 2019/03/27 23:00 | Grills, Jacob v Brandon Walkin | 6-2,4-6,7-6 |