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Mary Stoiana vs Sayaka Ishii — Japan Open - Osaka Qualifying Round of 16

Japan Open - OsakaQ16QualifyingHardSun 18 Oct · 23:30Final1h 47m
Mary StoianaWTA #114 · USA
Sayaka IshiiWTA #588 · JPN
SetsGames2
67
0
45

Mary Stoiana defeated Sayaka Ishii 6-4, 7-5 in the Osaka Japan Open Q16. The match saw Stoiana and Ishii hit an equal number of aces, with Stoiana committing fewer double faults. Stoiana converted 70% of her break points and won 7 service breaks to Ishii's 5.

Generated automatically from Umpiry match data.

Key context

How the match was decided

Auto-generated

Stoiana M. took it in straight sets.

  • 1st-serve points wonStoiana M. 56% · Ishii S. 51%
  • AcesStoiana M. 1 · Ishii S. 1
  • Double faultsStoiana M. 3 · Ishii S. 7

Turning points

When the match moved
  1. Set 16–4SetStoiana M. · Broke to take the set
  2. Set 21–1Break backStoiana M. · Broke back
  3. Set 25–2Break backIshii S. · Broke back
  4. Set 25–4Break backIshii S. · Broke back
  5. Set 27–5SetStoiana M. · Broke to take the set

Win probability during the match

i
100%Stoiana M.
0%Ishii S.
Final · 6–4 7–5
0–10–21–22–22–33–34–34–45–46–40–11–12–13–14–15–15–25–35–45–56–57–5Set 1 · 6–4Set 2 · 7–5
  1. Break by Ishii S.
  2. Break by Stoiana M.
  3. Break by Ishii S.
  4. Break by Stoiana M.
  5. Break by Stoiana M.
  6. Set won by Stoiana M.
  7. Break by Ishii S.
  8. Break by Stoiana M.
  9. Break by Stoiana M.
  10. Break by Stoiana M.
  11. Break by Ishii S.
  12. Break by Ishii S.
  13. Break by Stoiana M.
  14. Set won by Stoiana M.
Mary StoianaSayaka Ishii
Recorded during the match
Serve flowStoiana M. broken 5 times · Ishii S. broken 7 times.
  • Hold to love/15
  • Hold to 30
  • Hold to 40 / deuce
  • Broken
  • Result unknown
Stoiana M.
6/11Ishii S.
4/11
Set 1Set 2

Match momentum

Whole matchStoiana M.Ishii S.
EvenStoiana M.Ishii S.
Late momentumStoiana M.59
8Last 12 points4
10Last 3 games12
6/9Break points5/10

Break of serve

Match statistics

Stoiana M.Ishii S.
Serve
  • 1Aces1
  • 3Double faults7
  • 56%1st serve points won51%
  • 55% · 6/11Service games held36% · 4/11
Return
  • 70%Break points won50%
  • 7Breaks of serve5

Serve & return performance

Key performance gaps
Double faultsStoiana M. served 3 double faults, Ishii S. 7. Largest performance gap of the match.+4Stoiana M.3Ishii S.7

Common opponents

0 shared · last 12 months
No common opponents in the last 12 months. Surface form and ELO carry more weight here.

Head-to-head

1 meeting · Stoiana M. leads 1–0
10

Draw

Closing odds

Player context

Before the match
Stoiana M.Ishii S.1 789ELO1 6321 688Hard ELO1 6176–4Last 107–323Age21Career $421K2026 $260KEarningsCareer $236K2026 $39K

Match info

  • Started23:30 local
  • Duration1h 47m

Cite this

Mary Stoiana beat Sayaka Ishii 6-4 7-5. Umpiry, "Mary Stoiana vs Sayaka Ishii — Japan Open - Osaka Qualifying Round of 16", https://umpiry.com/match/2026-10-18/ishii-vs-stoiana-japan-open-osaka-q16?utm_source=cite (as of 18 October 2026).