| ITF W50 Kashiwa | 03/31 01:00 | 45 |
Moeka Miyata
v
Sayaka Ishii 
|
1-6,2-6 | |
| WTA Miami | 03/17 15:00 | 14 |
[78] Bernarda Pera
v
Sayaka Ishii [373]
|
6-0,6-4 | |
| ITF W35 Traralgon | 02/28 01:55 | 25 |
[354] Jia-Jing Lu
v
Sayaka Ishii [386]
|
6-2,6-4 | |
| ITF W35 Traralgon | 02/23 00:00 | 27 |
[385] Sayaka Ishii v
Naho Sato
[396] |
4-6,1-6 | |
| ITF W35 Traralgon | 02/22 00:45 | 26 |
[385] Sayaka Ishii v
Naiktha Bains
[452] |
6-3,6-2 | |
| ITF W35 Traralgon | 02/21 04:45 | 25 |
[208] Sijia Wei
v
Sayaka Ishii [385]
|
2-6,6-7 | |
| ITF W35 Wesley Chapel | 02/08 15:40 | 26 |
Sayaka Ishii v
Panna Bartha
|
6-1,6-7,2-6 | |
| ITF W35 Wesley Chapel | 02/06 17:25 | 25 |
[385] Sayaka Ishii v
Maria Kozyreva
[422] 
|
6-4,6-2 | |
| ITF W75 Vero Beach | 01/25 16:00 | 26 |
[490] Clervie Ngounoue
v
Sayaka Ishii [411]
|
6-4,6-3 | |
| ITF W75 Vero Beach | 01/24 16:00 | 25 |
Fernanda C Huerta
v
Sayaka Ishii
|
1-6,0-6 | |
| ITF W75 Vero Beach | 01/23 16:00 | 54 |
[411] Sayaka Ishii v
Anna Rogers
[193] |
6-2,6-7,6-3 | |
| ITF W75 Vero Beach | 01/22 20:35 | 54 |
Sayaka Ishii v
Mia Yamakita
|
6-2,7-5 | |
| ITF W50 Nonthaburi | 01/13 02:55 | 28 |
[451] Sayaka Ishii v
Mananchaya Sawangkaew
[266] 
|
6-3,2-6,5-7 | |
| ITF W50 Nonthaburi | 01/12 03:00 | 27 |
[242] Dalila Jakupovic
v
Sayaka Ishii [451]
|
0-6,0-6 | |
| ITF W50 Nonthaburi | 01/11 03:00 | 26 |
[451] Sayaka Ishii v
Ksenia Zaytseva
[366] |
6-2,6-4 | |
| ITF W50 Nonthaburi | 01/10 04:20 | 25 |
[364] Punnin Kovapitukted
v
Sayaka Ishii [451]
|
6-4,1-6,0-6 | |
| ITF W50 Nonthaburi | 01/08 04:25 | 54 |
[445] Evgeniya Rodina
v
Sayaka Ishii [451]
|
3-6,4-6 | |
| ITF W50 Nonthaburi Qual | 01/07 07:35 | 54 |
Watsachol Sawatdee
v
Sayaka Ishii
|
2-6,1-6 | |
| ITF W50 Nonthaburi | 01/05 04:35 | 27 |
[474] Sayaka Ishii v
Antonia Ruzic
[244] 
|
3-6,2-6 | |
| ITF W50 Nonthaburi | 01/04 04:25 | 26 |
[237] Dalila Jakupovic
v
Sayaka Ishii [474]
|
2-6,2-6 | |
| ITF W50 Nonthaburi | 01/03 04:40 | 25 |
[271] En Shuo Liang
v
Sayaka Ishii [474]
|
1-6,3-6 | |
| ITF W50 Nonthaburi | 01/01 06:00 | 54 |
[457] Mana Kawamura
v
Sayaka Ishii [474]
|
1-6,6-2,4-6 | |
| ITF W50 Nonthaburi | 12/31 06:30 | 54 |
[405] Hiroko Kuwata
v
Sayaka Ishii [468]
|
0-6,3-6 | |
| ITF W60 Gold Coast | 11/30 00:30 | 26 |
Eri Shimizu
v
Sayaka Ishii
|
6-4,2-6,6-4 | |
| ITF W60 Gold Coast | 11/29 01:10 | 25 |
Sayaka Ishii v
Joanna Garland
|
6-3,2-6,7-6 | |
| ITF W60 Gold Coast | 11/27 00:00 | 54 |
Sayaka Ishii v
Elysia Bolton
|
6-3,6-2 | |
| ITF W60 Gold Coast | 11/26 02:25 | 54 |
Sayaka Ishii v
Natsuho Arakawa
|
6-3,6-0 | |
| ITF W100 Takasaki | 11/21 03:25 | 25 |
Yuriko Lily Miyazaki
v
Sayaka Ishii
|
6-4,6-2 | |
| ITF W100 Takasaki | 11/14 03:10 | 25 |
[128] Mai Hontama
v
Sayaka Ishii [471]
|
6-1,6-3 | |
| ITF W60 Nantes | 10/30 09:30 | 54 |
Sayaka Ishii v
Veronika Podrez
|
4-6,4-6 |