| Bulgaria Open 2019, MS | 2019/08/15 13:45 | Liam Pitchford v Kou, Lei | L | 4-2 |
| Bulgaria Open 2019, MS | 2019/08/14 18:05 | Skachkov, Kirill v Kou, Lei | W | 1-4 |
| European Games | 2019/06/26 14:00 | Tomislav Pucar v Kou, Lei | L | 4-1 |
| European Games | 2019/06/26 10:00 | Jonathan Groth v Kou, Lei | L | 4-0 |
| European Games | 2019/06/25 13:00 | Cedric Nuytinck v Kou, Lei | W | 2-4 |
| European Games | 2019/06/24 16:00 | Kou, Lei v Shibaev, Alexander | W | 4-1 |
| European Games | 2019/06/22 16:00 | Ovidiu Ionescu v Kou, Lei | W | 2-4 |
| World Championship | 2019/04/23 18:40 | Kou, Lei v Jingkun Liang | L | 1-4 |
| German Open 2020, MS | 2019/10/08 19:15 | An Yan v Mizuki Oikawa | W | 4-1 |
| German Open 2020, MS | 2019/10/08 11:00 | Adam Szudi v An Yan | W | 0-4 |
| Swedish Open (WTP) 2019, MS, Qualification | 2019/10/01 15:00 | An Yan v Niagol Stoyanov | W | 4-0 |
| Japan Open 2019, MS | 2019/06/14 06:00 | Jeoung, Youngsik v An Yan | L | 4-3 |
| Japan Open 2019, MS | 2019/06/13 07:10 | An Yan v Yingbin Xu | W | 4-2 |
| Japan Open 2019, MS | 2019/06/12 05:00 | Chuqin Wang v An Yan | W | 2-4 |
| Japan Open 2019, MS | 2019/06/12 00:00 | Kakeru Sone v An Yan | W | 1-4 |
| Ligue des Champions | 2019/05/08 15:20 | An Yan v Andrej Gacina | W | 3-0 |