| Open de Suède | 2019/01/20 12:00 | Koga, Minoru v Kean Yew Loh | W | 2-0 |
| Open de Suède | 2019/01/19 17:00 | Koga, Minoru v Heino, Eetu | W | 2-0 |
| Open de Suède | 2019/01/19 10:00 | Koga, Minoru v Burestedt, Felix | W | 2-1 |
| Open de Suède | 2019/01/18 08:30 | Kim Bruun v Koga, Minoru | W | 0-2 |
| Estonie Int. - | 2019/01/11 16:30 | Must, Raul v Koga, Minoru | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/10/23 12:00 | Sardik, Datu Mohd Shah Eizlan v Koga, Minoru | W | 0-2 |
| Giraldilla Int. XD | 2018/08/08 04:25 | Malkov, Vladimir v Koga, Minoru | L | 2-1 |
| Giraldilla Int. XD | 2018/08/07 12:10 | Koga, Minoru v Ng, Zin Rei Ryan | W | 2-1 |
| Giraldilla Int. XD | 2017/02/07 07:20 | Chotphinit, Phakorn v Oupthong, Ruttanapak | L | 0-2 |
| Indonesia Masters XD | 2016/10/04 03:58 | Nualnooplong, Yodsakorn v Chotphinit, Phakorn | L | 2-0 |