Stadium: Center Court Round: 24 Ground: Clay
| Challenger Zhangjiagang | 2019/03/19 04:40 | Zihao Xia v James Duckworth | 0-6,3-6 |
| Challenger Zhangjiagang | 2019/03/18 03:10 | Zihao Xia v Tak Khunn Wang | 1-6,7-6,6-3 |
| Challenger Šen-čen | 2019/03/11 03:50 | Zihao Xia v Duckhee Lee | 3-6,1-6 |
| Challenger Ču-chaj | 2019/03/05 02:00 | Zihao Xia v Max Purcell | 7-6,5-7,1-6 |
| Challenger Jokohama | 2019/02/26 01:00 | Duckhee Lee v Zihao Xia | 6-0,6-3 |
| Challenger Canberra | 2019/01/06 04:25 | Thomas Fancutt v Zihao Xia | 6-3,6-2 |
| ITF - M25 - Hongkong | 2019/01/02 06:35 | Zihao Xia v Kuan-Yi Lee | 1-6,2-6 |
| ITF Hong Kong F3 | 2018/12/25 03:45 | Arthur Rinderknech v Zihao Xia | 6-7,6-3,6-2 |
| Challenger Taipei | 2019/04/08 10:25 | Stephane Robert v Goncalo Oliveira | 6-3,6-4 |
| Challenger Alicante | 2019/04/01 16:30 | Goncalo Oliveira v Lorenzo Giustino | 6-3,4-6,3-6 |
| Challenger - St Brieuc | 2019/03/26 12:00 | Manuel Guinard v Goncalo Oliveira | 7-5,6-1 |
| Challenger Zhangjiagang | 2019/03/20 02:00 | Goncalo Oliveira v Uladzimir Ignatik | 3-6,2-6 |
| Challenger Zhangjiagang | 2019/03/19 04:05 | Yibing Wu v Goncalo Oliveira | 2-6,6-2,2-6 |
| Challenger Ču-chaj | 2019/03/04 07:10 | Kaichi Uchida v Goncalo Oliveira | 6-3,7-6 |
| Challenger Jokohama | 2019/02/26 02:20 | Goncalo Oliveira v Ivan Gakhov | 3-6,6-7 |
| Challenger Bangkok 1A | 2019/02/20 03:00 | Goncalo Oliveira v Soonwoo Kwon | 2-6,7-6,1-6 |