WTAHardOsaka2026-10-18 03:00
Mary Stoiana v Sayaka Ishii
The market
M. StoianaFAV1.1186%
S. Ishii6.8614%
Percentages are the implied chance of winning with the bookmaker's margin removed.
Head to head
First career meetingNo previous matches between these two on record.
This season & this event
M. Stoiana
S. Ishii
43-26
21-15
Did not play
Did not play
2026 record
2026 on hard
Here in 2025
Here in 2024
16-19
16-14
Did not play
Did not play
Ranking points fall off a year after they are earned, so a player who went deep here last year must match it or drop in the rankings. That shapes effort in a way the price does not always show.
The players
Mary Stoiana
USA
Sayaka Ishii
Japan
122
23
USA
39–23
0
18–13
13–6
8–4
Ranking
Age
Country
2026 W/L
Titles
Hard
Clay
Grass
211
21
Japan
15–16
0
10–11
0–1
5–4
Ranking, record and surface splits are for the most recent season on file. Height, weight and handedness are not published by our data provider.
M. Stoiana — last 10
With the pre-match price we recorded at the time.
| Date | Event | Surface | Opponent | Score | Their price | Market | Result |
|---|---|---|---|---|---|---|---|
| 2026-10-17 | Osaka | Hard | R. Matsuda | 2 - 0 | 1.10 | 87% | WON |
| 2026-10-01 | W100 Templeton | Hard | J. Pareja | 2 - 0 | 1.67 | 55% | LOST |
| 2026-09-30 | W100 Templeton | Hard | H. Chang | 0 - 2 | 1.18 | 81% | WON |
| 2026-09-18 | Sao Paulo | Clay | P. Badosa | 0 - 2 | 2.95 | 68% | LOST |
| 2026-09-16 | Sao Paulo | Clay | D. Salkova | 0 - 2 | 1.50 | 64% | WON |
| 2026-09-14 | Sao Paulo | Clay | C. Liu | 2 - 0 | 2.11 | 54% | WON |
| 2026-09-09 | Barranquilla | Hard | J. Riera | 2 - 1 | 1.33 | 71% | LOST |
| 2026-09-08 | Barranquilla | Hard | J. Ortenzi | 0 - 2 | 1.09 | 87% | WON |
| 2026-09-02 | US Open | Hard | A. Eala | 0 - 2 | 4.97 | 80% | LOST |
| 2026-08-27 | US Open | Hard | Y. Yuan | 1 - 2 | 1.81 | 53% | WON |
S. Ishii — last 10
With the pre-match price we recorded at the time.
| Date | Event | Surface | Opponent | Score | Their price | Market | Result |
|---|---|---|---|---|---|---|---|
| 2026-10-17 | Osaka | Hard | E. Avanesyan | 1 - 0 RET | 4.56 | 79% | WON |
| 2026-09-26 | W50 Nanao | Hard | H. Abe | 0 - 2 | — | — | LOST |
| 2026-09-25 | W50 Nanao | Hard | R. Itaya | 2 - 0 | 1.12 | 84% | WON |
| 2026-09-24 | W50 Nanao | Hard | N. Kawaguchi | 1 - 2 | 2.10 | 56% | WON |
| 2026-09-23 | W50 Nanao | Hard | N. Hanatani | 0 - 2 | 1.05 | 88% | WON |
| 2026-09-18 | W35 Kyoto | Hard | H. Abe | 2 - 1 | — | — | LOST |
| 2026-09-17 | W35 Kyoto | Hard | A. Rajecki | 2 - 1 | 2.20 | 58% | WON |
| 2026-09-15 | W35 Kyoto | Hard | S. Y. Cheuk | 2 - 0 | — | — | WON |
| 2026-08-27 | W15 Torello | Hard | A. Ferlito Faticanti | 1 - 2 | — | — | LOST |
| 2026-08-26 | W15 Torello | Hard | N. Torner Sensano | 0 - 2 | 1.95 | 51% | WON |
Common questions
Who is favourite, Mary Stoiana or Sayaka Ishii?
Mary Stoiana is favourite at 1.11, which is a 86% chance once the bookmaker's margin is removed.
What are the odds for Mary Stoiana vs Sayaka Ishii?
Mary Stoiana is 1.11 and Sayaka Ishii is 6.86, the prices we recorded for the Osaka match.