Stadium: Court 16 Round: 26 Ground: Clay
| ITF Japan F5 MD | 2018/04/04 07:40 | Ehara/Katayama v Fujii/Ochi | 6-2,3-6,6-10 |
| ITF Japan F5 MD | 2018/04/02 07:40 | Ehara/Katayama v Chiu/Grills | 6-4,6-0 |
| ITF Japan F3 MD | 2018/03/23 02:45 | Seol/Song v Ehara/Katayama | 5-7,6-7 |
| ITF Japan F3 MD | 2018/03/23 01:30 | Kikuchi/Takeshima v Ehara/Katayama | 6-7,5-7 |
| ITF Japan F3 MD | 2018/03/22 09:10 | Lee/Lim v Ehara/Katayama | 6-7,3-6 |
| ITF Japan F3 MD | 2018/03/19 07:55 | Hashikawa/Oku v Ehara/Katayama | 4-6,3-6 |
| ITF Japan F2 MD | 2018/03/13 06:55 | Lee/Lim v Ehara/Katayama | 7-6,3-6,10-8 |
| Challenger Yokohama Qual MD | 2018/02/25 04:00 | Ehara/Katayama v Donati/Leshem | 6-7,3-6 |
| ITF Japan F1 MD | 2018/03/09 05:00 | Imai/Niki v Kibi/Onozawa | 7-5,7-5 |
| ITF Japan F1 MD | 2018/03/08 08:55 | Kibi/Onozawa v Kikuchi/Takeshima | 6-2,6-3 |
| ITF Japan F1 MD | 2018/03/06 07:45 | Kibi/Onozawa v Mochizuki/Shimabukuro | 6-4,6-1 |
| ITF China F12 MD | 2015/08/07 10:10 | Kibi/Onozawa v Hsieh/Yang | 3-6,5-7 |
| ITF China F12 MD | 2015/08/06 12:10 | Katayama/Sato v Kibi/Onozawa | 3-6,3-6 |