| ITF W15 Fukui | 04/25 02:00 | 25 | Chihiro Takayama v Riko Sawayanagi | 5-7,0-6 | |
| ITF W25 Osaka | 04/18 01:00 | 54 | Risa Ushijima v Chihiro Takayama | 6-2,6-3 | |
| ITF W25 Osaka | 04/17 02:00 | 54 | Britney Chiu v Chihiro Takayama | 4-6,2-6 | |
| ITF W25 Osaka | 04/09 03:00 | 62 | Risa Ushijima v Chihiro Takayama | 6-4,6-3 | |
| ITF W25 Giacarta - Qual. | 03/26 03:20 | 44 | Chihiro Takayama v Yujin Ahn | Retired | |
| ITF W15 Jakarta | 03/15 06:10 | 25 | Risa Ushijima v Chihiro Takayama | 6-1,3-6,6-3 | |
| ITF W15 Jakarta | 03/14 02:15 | 44 | Chihiro Takayama v Daria Domova | 6-2,6-1 | |
| ITF W15 Jakarta | 03/13 03:05 | 44 | Chihiro Takayama v Ananya Yadav | 6-2,6-0 | |
| ITF W15 Kuching | 03/02 01:30 | 26 | Dabin Kim v Chihiro Takayama | 6-1,7-6 | |
| ITF W15 Kuching | 03/01 09:20 | 25 | Chihiro Takayama v Riko Hiroshima | 6-3,6-0 | |
| ITF W60 Kyoto | 12/19 08:20 | 19 | Chihiro Takayama v Ramu Ueda | 4-6,6-1,11-13 | |
| ITF W60 Kyoto | 12/19 03:00 | 45 | Aoi Ito v Chihiro Takayama | 6-3,6-7,8-10 | |
| ITF W25 Hua Hin | 10/03 11:20 | 54 | Zongyu Li v Chihiro Takayama | 6-4,6-1 | |
| ITF W25 Hua Hin | 10/02 06:00 | 54 | Rada Manataweewat v Chihiro Takayama | 2-6,4-6 | |
| ITF W25 Santarem | 09/05 09:00 | 54 | Hiroko Kuwata v Chihiro Takayama | 3-6,6-3,10-6 | |
| ITF W25 Leiria | 08/31 14:50 | 25 | Chihiro Takayama v Amy Zhu | 3-6,3-6 | |
| ITF W25 Leiria | 08/29 13:10 | 54 | Kathleen Kanev v Chihiro Takayama | 3-6,6-2,10-4 | |
| ITF W25 Leiria | 08/28 15:30 | 54 | Andra Sutherland v Chihiro Takayama | 1-6,0-6 | |
| ITF W25 Vigo | 08/22 16:00 | 62 | Chihiro Takayama v Julia Camblor | 2-6,5-7 | |
| ITF W25 Ourense | 08/17 10:25 | 25 | Basak Eraydin v Chihiro Takayama | 5-7,6-1,6-3 | |
| ITF W25 Ourense | 08/15 10:00 | 44 | Maria Fernanda Navarro v Chihiro Takayama | 6-2,5-7,9-11 | |
| ITF W25 Ourense | 08/14 08:00 | 44 | Cayetana Gay v Chihiro Takayama | 0-6,0-6 | |
| ITF W15 Monastir | 08/10 09:30 | 25 | Chihiro Takayama v Yasmine Mansouri | 4-6,5-7 | |
| ITF W15 Monastir | 08/03 09:30 | 25 | Xinxin Yao v Chihiro Takayama | 6-4,6-2 | |
| ITF W15 Monastir | 07/28 09:30 | 26 | Chihiro Takayama v Caroline Romeo | Walkover | |
| ITF W15 Monastir | 07/26 07:50 | 25 | Chihiro Takayama v Tanisha Kashyap | 7-6,6-2 | |
| ITF W15 Chiang Rai | 06/21 04:40 | 25 | Chihiro Takayama v Tamachan Momkoonthod | 3-6,4-6 | |
| ITF W15 Chiang Rai | 06/18 03:00 | 26 | Naho Sato v Chihiro Takayama | Cancelled | |
| ITF W15 Chiang Rai | 06/15 03:25 | 25 | Anri Nagata v Chihiro Takayama | 4-6,6-1,6-3 | |
| ITF W15 Monastir | 05/18 08:30 | 25 | Chihiro Takayama v Sijia Wei | Retired |