Stadium: Ct 6 Round: 62
| ITF Women Toyota Qual | 2017/11/12 06:55 | Haruna Arakawa v Chihiro Muramatsu | 2-6,3-6 |
| ITF Women Makinohara | 2017/10/11 00:30 | Haruna Arakawa v Chihiro Muramatsu | 6-1,4-6,1-6 |
| ITF Women Brisbane | 2018/09/30 07:00 | Chihiro Muramatsu v Shelby Talcott | 6-3,6-2 |
| ITF Women Darwin | 2018/09/25 01:55 | Irina Ramialison v Chihiro Muramatsu | 6-2,6-4 |
| ITF Women Darwin | 2018/09/24 00:30 | Aiko Yoshitomi v Chihiro Muramatsu | 0-6,2-6 |
| ITF Women Darwin | 2018/09/23 03:15 | Lisa Mays v Chihiro Muramatsu | 6-1,4-6,3-6 |
| WTA Tokyo | 2018/09/16 06:50 | Eugenie Bouchard v Chihiro Muramatsu | 6-1,2-6,7-5 |
| WTA Tokyo | 2018/09/15 09:40 | Chihiro Muramatsu v Misa Eguchi | 6-2,6-0 |
| WTA Hiroshima | 2018/09/09 08:25 | Arina Rodionova v Chihiro Muramatsu | 3-6,6-4,7-5 |
| WTA Hiroshima | 2018/09/08 02:00 | Risa Ozaki v Chihiro Muramatsu | 4-6,6-3,3-6 |
| ITF Women Brisbane | 2018/09/30 07:00 | Yuki Kristina Chiang v Haruna Arakawa | 4-6,3-6 |
| ITF Women Brisbane | 2018/09/30 05:00 | Isabella Bozicevic v Haruna Arakawa | 3-6,4-6 |
| ITF Women Kyoto | 2018/09/08 03:30 | Haruna Arakawa v Himeno Sakatsume | 6-3,3-6,1-6 |
| ITF Women Kyoto | 2018/09/07 03:30 | Haruna Arakawa v Michika Ozeki | 6-3,6-3 |
| ITF Women Kyoto | 2018/09/06 01:00 | Haruna Arakawa v Mitsumi Kawasaki | 6-0,6-3 |
| ITF Women Kyoto | 2018/09/05 04:55 | Haruna Arakawa v Anri Nagata | 6-2,6-2 |
| ITF Women Kyoto | 2018/09/05 01:00 | Haruna Arakawa v Michiru Furuya | 6-4,6-2 |
| ITF Women Nanao | 2018/08/28 03:00 | Haruna Arakawa v Mai Hontama | 2-6,7-6,3-6 |