| ITF W100 - Gifu | 05/03 01:00 | 27 | [141] Arianne Hartono v Sara Saito [240] | 6-1,6-1 | |
| ITF W100 - Gifu | 05/02 01:00 | 26 | [240] Sara Saito v Emina Bektas [108] | 6-1,6-3 | |
| ITF W100 - Gifu | 04/30 06:30 | 25 | [240] Sara Saito v Carol Zhao [233] | 6-3,6-1 | |
| ITF W100 - Tokyo | 04/24 04:35 | 25 | [240] Sara Saito v Moyuka Uchijima [130] | 6-3,6-7,2-6 | |
| ITF W35 - Osaka | 04/11 01:00 | 26 | [320] Ya-Hsuan Lee v Sara Saito [236] | 4-6,7-6,7-6 | |
| ITF W35 - Osaka | 04/09 01:00 | 25 | [392] Natsumi Kawaguchi v Sara Saito [236] | 4-6,1-6 | |
| ITF W50 - Kashiwa | 04/04 01:30 | 26 | [142] Arianne Hartono v Sara Saito [244] | 6-3,6-1 | |
| ITF W50 - Kashiwa | 04/02 00:55 | 25 | Lea Ma v Sara Saito | 1-6,6-7 | |
| ITF W50 - Kofu | 03/29 04:20 | 27 | [246] Sara Saito v Ya-Hsuan Lee [413] | 2-6,6-4,4-6 | |
| ITF W50 - Kofu | 03/28 00:55 | 26 | [251] Hanna Chang v Sara Saito [246] | 5-7,3-6 | |
| ITF W50 - Kofu | 03/27 02:10 | 25 | [246] Sara Saito v Ena Shibahara [383] | 6-2,6-2 | |
| ITF W75 - Burnie | 02/09 23:30 | 28 | [268] Sara Saito v Aoi Ito [329] | 6-3,2-6,3-6 | |
| ITF W75 - Burnie | 02/08 23:00 | 27 | [268] Sara Saito v Petra Hule [405] | 4-6,6-1,6-3 | |
| ITF W75 - Burnie | 02/07 23:00 | 26 | [268] Sara Saito v Ena Shibahara [433] | 7-6,6-3 | |
| ITF W75 - Burnie | 02/06 22:45 | 25 | [185] Gabriela Knutson v Sara Saito [268] | 5-7,6-3,1-6 | |
| ITF W75 - Burnie | 02/04 00:25 | 29 | [300] Sara Saito v Priscilla Hon [201] | 3-6,0-6 | |
| ITF W75 - Burnie | 02/02 23:30 | 28 | [365] Aoi Ito v Sara Saito [300] | 5-7,0-6 | |
| ITF W75 - Burnie | 02/02 03:05 | 27 | [300] Sara Saito v Yuki Naito [408] | 6-2,6-1 | |
| ITF W75 - Burnie | 02/01 00:25 | 26 | [202] Destanee Aiava v Sara Saito [300] | 3-6,5-7 | |
| ITF W75 - Burnie | 01/30 23:00 | 25 | [355] Tina Nadine Smith v Sara Saito [300] | 4-6,1-6 | |
| ITF W50 - Nonthaburi | 01/13 02:55 | 28 | [322] Sara Saito v Antonia Ruzic [211] | 4-6,0-6 | |
| ITF W50 - Nonthaburi | 01/12 02:50 | 27 | [310] Katie Swan v Sara Saito [322] | 7-5,0-6,0-6 | |
| ITF W50 - Nonthaburi | 01/11 04:10 | 26 | [322] Sara Saito v Haruka Kaji [262] | Retired | |
| ITF W50 - Nonthaburi | 01/10 04:40 | 25 | [309] Anastasia Kulikova v Sara Saito [322] | 4-6,2-6 | |
| ITF W50 - Nonthaburi | 01/07 03:00 | 29 | [244] Antonia Ruzic v Sara Saito [364] | 6-1,6-3 | |
| ITF W50 - Nonthaburi | 01/06 03:00 | 28 | [14] Ena Shibahara v Sara Saito [364] | 6-4,1-6,3-6 | |
| ITF W50 - Nonthaburi | 01/05 04:40 | 27 | [315] Anastasia Kulikova v Sara Saito [364] | 6-3,5-7,2-6 | |
| ITF W50 - Nonthaburi | 01/04 05:25 | 26 | [364] Sara Saito v Margaux Rouvroy [234] | 7-5,6-1 | |
| ITF W50 - Nonthaburi | 01/03 07:35 | 25 | [364] Sara Saito v Ekaterina Maklakova [418] | 7-5,6-1 | |
| ITF W40 - Yokohama | 11/29 00:55 | 25 | [335] Sara Saito v Suzan Lamens [216] | 6-4,3-6,4-6 |