Results
| ITF W35 Makinohara | 10/29 02:00 | - | Natsuko Saegusa v Sakura Hosogi | 4-6,1-6 | |
| UTR Pro Yokohama Women | 08/21 00:00 | - | Yasmin Vavrova v Natsuko Saegusa | CANC | |
| UTR Pro Yokohama Women | 08/21 00:00 | - | Azuna Ichioka v Natsuko Saegusa | CANC | |
| UTR Pro Yokohama Women | 08/19 03:55 | - | Misaki Yamagishi v Natsuko Saegusa | Walkover | |
| UTR Pro Yokohama Women | 08/18 00:00 | - | Natsuko Saegusa v Rito Arima | Walkover | |
| ITF W15 Toyama | 05/14 04:00 | - | Natsuko Saegusa v Hayu Kinoshita | 3-6,0-5 | |
| ITF W100 Tokyo | 04/21 05:30 | - |
Natsuko Saegusa v
Sohyun Park
|
2-6,1-6 | |
| UTR Pro Yokohama Women | 03/08 00:00 | 53 | Natsuko Saegusa v Mua Shigeta | Walkover | |
| UTR Pro Yokohama Women | 03/07 00:00 | 28 | Nagomi Higashitani v Natsuko Saegusa | Retired | |
| UTR Pro Yokohama Women | 03/06 06:45 | - | Natsuko Saegusa v Kurumi Tamura | 5-7,2-6 | |
| UTR Pro Yokohama Women | 03/06 03:00 | - | Natsuko Saegusa v Akiho Maruyama | 6-1,6-3 | |
| UTR Pro Yokohama Women | 03/04 00:00 | - | Natsuko Saegusa v Azuna Ichioka | 4-6,7-6,3-6 |
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