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TJPlayer research cockpit

Ayumi Koshiishi

TennisJack analysis

Ayumi Koshiishi currently has a useful TennisJack sample of 33 completed matches, with a 48.5% win rate in the loaded match history. The recent form line is 5-5 across the latest 10 completed matches.

Latest rank #473
M
Matches33Completed matches
%
Win rate48.5%Across all matches
F
Latest form5-5In latest 10 matches
Performance metrics
Hold Base55.5%
Break Pressure40.5%
Latest form (10 matches)
5-5
L Oldest W 2 W 3 L 4 L 5 W 6 W 7 L 8 W 9 L Latest
Surface profile
Hardcourt outdoor 27 matches · 48.1% WR
Japan flag
CountryJapanCountry profile
PlayRightRight-handed
Highest Rank#367Singles career high
Age / Birthday25Born 28 Jul 2000
Profile intelligence

Ten signals worth watching.

Built from 33 completed TennisJack matches: form, surface, odds, pressure and close-set behavior. The full match log stays below for audit.

01

Player DNA

Quick fingerprint from starts, service base, return bite and decider exposure.

Balanced starts Break-heavy player
Set 1 punch54.5%
Service shield55.5%
Return bite40.5%
Decider risk21.2%
02

Favorite / Underdog Split

How the player behaves when priced as market favorite versus outsider.

Favorite 78.6% 11-3 - 14 matches Avg odds 1.45 | 1+ set 78.6%
Underdog 26.3% 5-14 - 19 matches Avg odds 2.81 | 1+ set 47.4%
03

First Set Personality

Shows whether the player starts cleanly, breaks first, or survives early pressure.

Set 1 win54.5%
Breaks first S127.3%
Broken first S172.7%
Recovers S137.5%
04

Break Pressure Profile

Return damage versus service leakage, built from set-level break counters.

Avg breaks3.97
Avg broken4.24
Balance-0.27
Clean service matches3.0%
3+ breaks produced75.8%
Set 2 win45.5%
05

Clean Win / Comeback Index

Separates smooth 2-0 wins from matches where the player had to repair damage.

43.8%Clean 2-0 share among wins
Clean 2-0 wins7
Comeback signals19
Lost set 1, won match1
Comeback index57.6%
06

Surface Edge

Where the profile is most trustworthy and where the win rate really travels.

Primary surfaceHardcourt outdoor
Primary record13-14
Primary WR48.1%
Best surfaceHardcourt indoor 50.0%
Hardcourt outdoor13-1448.1%
Hardcourt indoor3-350.0%
07

Odds Value Pulse

Shows whether the player wins as expected or creates value at outsider prices.

Avg win odds1.66
Avg loss odds2.78
Biggest win odds2.75
2.00+ odds WR23.5%
2.00+ sample17
Odds sample33
08

Decider Profile

How often matches become complicated, and whether the player survives the third set.

Three-set share21.2%
Decider record3-4
Set 3 win42.9%
After losing S16.7%
09

Close Set Risk

Tie-break and 7-5 / 7-6 pressure profile, useful for spotting fragile edges.

Close sets9-10
Close-set WR47.4%
Tie-breaks5-1
Matches with tight set16
10

Momentum Trend

Compares the latest 5 matches with the previous 10 so form shifts are visible immediately.

Heating up · 1 losses running
L oldest W 2 W 3 L 4 L 5 W 6 W 7 L 8 W 9 L latest
Latest 5 3-2 60.0% WR
Trend delta +20.0% latest vs previous sample
Match log

All Ayumi Koshiishi matches in the TennisJack sample.

Scan date, tournament, surface, players, odds, final score, result and service-return indicators from completed matches.

Open Player Research
Loss
11.09.2025
ITF W50 GuiyangHardcourt outdoor
Yufei Ren
vs
Ayumi Koshiishi
1.40
2.75
2-6 6-4 6-3
Hold
50.0%
Break
46.1%
Loss
26.08.2025
ITF W35 Nakhon PathomHardcourt outdoor
Ayumi Koshiishi
vs
Eunhye Lee
2.00
1.73
6-7 3-6
Hold
50.0%
Break
33.3%
Win
12.06.2025
W35 LuzhouHardcourt outdoor
Amy Zhu
vs
Ayumi Koshiishi
3.00
1.36
3-6 2-6
Hold
77.8%
Break
62.5%