| German Open 2020, XD | 2019/10/10 08:40 | Lee S / Jeon J v Ionescu/Szocs | W | 3-0 |
| Swedish Open (WTP) 2019, XD, Qualification | 2019/10/03 08:40 | Lee S / Jeon J v Harimoto/Hayata | L | 2-3 |
| Czech Open XD | 2019/08/22 08:00 | Lee S / Jeon J v MA T / Wu Y | L | 2-3 |
| Bulgaria Open 2019, XD | 2019/08/15 07:00 | Lee S / Jeon J v MA T / Wu Y | L | 1-3 |
| Australian Open 2019, XD | 2019/07/12 08:00 | Lee S / Jeon J v Doo/Wong | L | 0-3 |
| Australian Open 2019, XD | 2019/07/12 00:40 | Lee S / Jeon J v Balazova/Pistej | W | 3-1 |
| Australian Open 2019, XD | 2019/07/11 00:40 | Lee S / Jeon J v Lim C / Yoo C | W | 3-1 |
| Korea Open 2019, WD | 2019/07/05 07:30 | Lee S / Jeon J v Choi H / Yang H | L | 1-3 |
| German Open 2020, XD | 2019/10/10 08:40 | Nuytinck C / Lung L v Lin Y-J / Cheng I-C | W | 1-3 |
| Australian Open 2019, XD | 2019/07/12 08:00 | Mizutani J / Ito M v Lin Y-J / Cheng I-C | L | 3-0 |
| Australian Open 2019, XD | 2019/07/12 00:00 | Flore T / Gasnier L v Lin Y-J / Cheng I-C | W | 0-3 |
| Australian Open 2019, XD | 2019/07/11 00:00 | Gnanasekaran S / Kamath A G v Lin Y-J / Cheng I-C | W | 0-3 |
| Korea Open 2019, XD | 2019/07/04 01:40 | Mizutani J / Ito M v Lin Y-J / Cheng I-C | L | 3-1 |
| Japan Open 2019, XD | 2019/06/15 01:00 | Lin Y-J / Cheng I-C v Xu X / Zhu Y | L | 0-3 |
| Japan Open 2019, XD | 2019/06/14 08:30 | Lin Y-J / Cheng I-C v Niwa K / Ito M | W | 3-1 |
| Japan Open 2019, XD | 2019/06/14 01:00 | Lin Y-J / Cheng I-C v Badowski M / Bajor N | W | 3-0 |