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Portrait of Kokoro Isomura, tennis player
Player research cockpit

KokoroIsomura

TennisJack analysis

Kokoro Isomura currently has a large TennisJack sample of 87 completed matches, with a 49.4% win rate in the loaded match history. The recent form line is 5-5 across the latest 10 completed matches.

Latest rank #423
M
Matches87Completed matches
%
Win rate49.4%Across all matches
F
Latest form5-5In latest 10 matches
I
Index statusStrong candidateProfile confidence
Performance metrics
Hold Base69.9%
Break Pressure26.6%
Latest form (10 matches)
5-5
L W W W W L L W L L
Surface profile
Hardcourt outdoor
Canonical/players/kokoro-isomura/
Index statusStrong candidate
Last updatedData from TennisJack
Profile intelligence

Ten signals worth watching.

Built from 87 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 punch46.0%
Service shield69.9%
Return bite26.6%
Decider risk29.9%
02

Favorite / Underdog Split

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

Favorite 53.8% 14-12 - 26 matches Avg odds 1.50 | 1+ set 69.2%
Underdog 36.0% 9-16 - 25 matches Avg odds 3.10 | 1+ set 52.0%
03

First Set Personality

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

Set 1 win46.0%
Breaks first S153.3%
Broken first S146.7%
Recovers S117.1%
04

Break Pressure Profile

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

Avg breaks2.71
Avg broken2.87
Balance-0.16
Clean service matches16.1%
3+ breaks produced50.6%
Set 2 win50.6%
05

Clean Win / Comeback Index

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

55.8%Clean 2-0 share among wins
Clean 2-0 wins24
Comeback signals43
Lost set 1, won match9
Comeback index49.4%
06

Surface Edge

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

Primary surfaceHardcourt outdoor
Primary record26-31
Primary WR45.6%
Best surfaceHardcourt indoor 66.7%
Hardcourt outdoor26-3145.6%
Unknown13-1154.2%
Hardcourt indoor4-266.7%
07

Odds Value Pulse

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

Avg win odds1.86
Avg loss odds2.63
Biggest win odds3.00
2.00+ odds WR34.8%
2.00+ sample23
Odds sample51
08

Decider Profile

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

Three-set share29.9%
Decider record14-12
Set 3 win53.8%
After losing S119.1%
09

Close Set Risk

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

Close sets47-44
Close-set WR51.6%
Tie-breaks16-8
Matches with tight set63
10

Momentum Trend

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

Cooling down · 2 losses running
L W W W W L L W L L
Latest 5 WR20.0%
Previous 10 WR70.0%
Latest 51-4
Previous 107-3
Trend delta-50.0%
Latest 5 WR20.0%
Match log

All Kokoro Isomura matches in the TennisJack sample.

Scan date, tournament, surface, opponent, set score, result and service-return indicators before opening the deeper tools.

Open Player Research
DateMatchScoreResultHold / Break
09.09.2026 Kokoro Isomura vs Keisuke SaitohM25 Sapporo 4-6 1-6Surface pending Loss
Hold
37.5%
Break
22.2%
31.08.2026Round 19 Kokoro Isomura vs Enzo AguiardChallenger Zhangjiagang 7-6 5-7 6-7Hardcourt outdoor Loss
Hold
77.8%
Break
15.0%
30.08.2026Round 14 Kokoro Isomura vs Uisung ParkChallenger Zhangjiagang 7-5 6-4Hardcourt outdoor Win
Hold
90.9%
Break
27.3%
26.08.2026 Kokoro Isomura vs Yanki ErelM25 Taipei 4-6 0-6Surface pending Loss
Hold
37.5%
Break
12.5%
23.08.2026 Kokoro Isomura vs Fitriadi M RifqiM15 Maanshan 5-7 3-6Surface pending Loss
Hold
54.5%
Break
20.0%
22.08.2026 Kokoro Isomura vs Petr Bar BiryukovM15 Maanshan 7-5 6-3Surface pending Win
Hold
90.0%
Break
36.4%
21.08.2026 Kokoro Isomura vs Yusuke TakahashiM15 Maanshan 6-1 6-3Surface pending Win
Hold
87.5%
Break
62.5%
20.08.2026 Kokoro Isomura vs Zhao ZhaoM15 Maanshan 6-2 6-2Surface pending Win
Hold
100.0%
Break
50.0%
19.08.2026 Kokoro Isomura vs Miles JonesM15 Maanshan 3-6 7-6 6-1Surface pending Win
Hold
76.9%
Break
31.2%
11.08.2026R32 Kokoro Isomura vs Kasidit SamrejChallenger Astana 7-5 0-6 4-6Hardcourt outdoor Loss
Hold
42.9%
Break
35.7%
10.08.2026Round 19 Kokoro Isomura vs Mukund SasikumarChallenger Astana 1-6 7-6 6-3Hardcourt outdoor Win
Hold
61.5%
Break
31.2%
09.08.2026Round 14 Kokoro Isomura vs Uisung ParkChallenger Astana 6-2 6-2Hardcourt outdoor Win
Hold
75.0%
Break
75.0%
28.07.2026Round 14 Kokoro Isomura vs Karl PolingChallenger Vancouver 3-6 4-6Hardcourt outdoor Loss
Hold
77.8%
Break
0.0%
20.07.2026Round 19 Kokoro Isomura vs James TrotterChallenger Winnipeg 1-6 0-6Hardcourt outdoor Loss
Hold
-
Break
-
19.07.2026Round 14 Kokoro Isomura vs Ben JonesChallenger Winnipeg 4-6 6-4 7-6Hardcourt outdoor Win
Hold
-
Break
-
13.07.2026Round 19 Kokoro Isomura vs Alexander RozinChallenger Granby 6-7 4-6Hardcourt outdoor Loss
Hold
90.9%
Break
0.0%
12.07.2026Round 14 Kokoro Isomura vs Hunter HeckChallenger Granby 0-6 6-4 6-1Hardcourt outdoor Win
Hold
54.5%
Break
50.0%
09.07.2026 Kokoro Isomura vs Shintaro ImaiM15 Tokyo 4-6 0-6Surface pending Loss
Hold
37.5%
Break
12.5%
08.07.2026 Kokoro Isomura vs Naoto TomizawaM15 Tokyo 6-4 6-3Hardcourt outdoor Win
Hold
100.0%
Break
30.0%
03.07.2026 Kokoro Isomura vs Maximus JonesM15 Tokyo 3-6 6-3 1-6Surface pending Loss
Hold
75.0%
Break
7.7%
02.07.2026 Kokoro Isomura vs Yuto OkiM15 Tokyo 6-1 1-6 6-2Surface pending Win
Hold
72.7%
Break
45.5%
01.07.2026 Kokoro Isomura vs Ryotaro TaguchiM15 Tokyo 7-6 5-7 7-6Hardcourt outdoor Win
Hold
72.2%
Break
20.0%
13.06.2026 Kokoro Isomura vs Pawit SornlaksupM15 Maanshan 4-6 1-6Surface pending Loss
Hold
50.0%
Break
11.1%
11.06.2026 Kokoro Isomura vs Evan ZhuM15 Maanshan 6-4 6-3Surface pending Win
Hold
80.0%
Break
44.4%
10.06.2026 Kokoro Isomura vs Duckhee LeeM15 Maanshan 6-3 6-3Surface pending Win
Hold
55.6%
Break
77.8%
28.05.2026 Kokoro Isomura vs Hugo HashimotoM15 Gimcheon 3-6 1-5Surface pending Loss
Hold
57.1%
Break
0.0%
26.05.2026 Kokoro Isomura vs Duckhee LeeM15 Gimcheon 7-5 6-4Surface pending Win
Hold
72.7%
Break
45.5%
19.05.2026R32 Kokoro Isomura vs Dominik PalanChallenger Bengaluru 4-6 6-3 3-6Hardcourt outdoor Loss
Hold
78.6%
Break
14.3%
13.05.2026R16 Kokoro Isomura vs Ilya IvashkaChallenger Bengaluru 1-6 2-6Hardcourt outdoor Loss
Hold
42.9%
Break
0.0%
12.05.2026R32 Kokoro Isomura vs Karan SinghChallenger Bengaluru 7-6 6-3Hardcourt outdoor Win
Hold
90.9%
Break
18.2%
06.05.2026 Kokoro Isomura vs Sanhui ShinM25 Nakhon Pathom 0-6 4-6Surface pending Loss
Hold
50.0%
Break
0.0%
24.04.2026 Kokoro Isomura vs Giles HusseyM25 Luzhou 4-6 2-6Surface pending Loss
Hold
55.6%
Break
11.1%
23.04.2026 Kokoro Isomura vs Pietro Orlando FellinM25 Luzhou 6-1 3-6 6-2Surface pending Win
Hold
83.3%
Break
41.7%
21.04.2026 Kokoro Isomura vs Pavle MarinkovM25 Luzhou 7-5 5-3Surface pending Win
Hold
80.0%
Break
45.5%
13.04.2026Round 19 Kokoro Isomura vs Leo VithoontienChallenger Wuning 4-6 6-4 3-6Hardcourt outdoor Loss
Hold
-
Break
-
12.04.2026Round 14 Kokoro Isomura vs Weiwen PanChallenger Wuning Qual 6-1 6-3Hardcourt outdoor Win
Hold
-
Break
-
23.03.2026R32 Kokoro Isomura vs Dan AddedChallenger Yokkaichi 4-6 2-6Hardcourt outdoor Loss
Hold
55.6%
Break
11.1%
19.03.2026 Kokoro Isomura vs Sora FukudaM15 Nishi-Tokyo 5-7 3-6Surface pending Loss
Hold
70.0%
Break
9.1%
17.03.2026 Kokoro Isomura vs Shota ShimaM15 Nishi-Tokyo 3-6 7-6 6-3Surface pending Win
Hold
57.1%
Break
41.2%
12.03.2026 Kokoro Isomura vs Leo VithoontienM15 Hinode 4-6 2-6Surface pending Loss
Hold
44.4%
Break
22.2%
10.03.2026 Kokoro Isomura vs Kousuke OguraM15 Hinode 6-2 5-4Surface pending Win
Hold
66.7%
Break
66.7%
22.02.2026Round 14 Kokoro Isomura vs Tung-Lin WuChallenger Pune 1-6 4-6Hardcourt outdoor Loss
Hold
62.5%
Break
0.0%
10.02.2026R32 Kokoro Isomura vs Alex BoltChallenger Brisbane 5-7 3-6Hardcourt outdoor Loss
Hold
80.0%
Break
0.0%
09.02.2026Round 19 Kokoro Isomura vs Oliver AndersonChallenger Brisbane 6-4 6-4Hardcourt outdoor Win
Hold
90.0%
Break
30.0%
08.02.2026Round 14 Kokoro Isomura vs Ethan CookChallenger Brisbane Qual 7-6 6-1Hardcourt outdoor Win
Hold
77.8%
Break
45.5%
03.02.2026R32 Kokoro Isomura vs James McCabeChallenger Brisbane 2-6 3-6Hardcourt outdoor Loss
Hold
55.6%
Break
0.0%
02.02.2026Round 19 Kokoro Isomura vs Chase FergusonChallenger Brisbane 6-3 6-3Hardcourt outdoor Win
Hold
100.0%
Break
33.3%
01.02.2026Round 14 Kokoro Isomura vs Tomislav Edward PapacChallenger Brisbane 6-2 6-1Hardcourt outdoor Win
Hold
100.0%
Break
62.5%
25.01.2026Round 14 Kokoro Isomura vs Lorenzo CarboniChallenger Phan Thiet Qual 3-6 4-6Hardcourt outdoor Loss
Hold
50.0%
Break
22.2%
05.01.2026Round 19 Kokoro Isomura vs Hikaru ShiraishiChallenger Nonthaburi 2-6 6-0 1-6Hardcourt outdoor Loss
Hold
60.0%
Break
27.3%
04.01.2026Round 14 Kokoro Isomura vs Ji Sung NamChallenger Nonthaburi 1-6 7-6 6-4Hardcourt outdoor Win
Hold
66.7%
Break
20.0%
25.11.2025R32 Kokoro Isomura vs Karan SinghChallenger Playford 7-5 4-6 3-6Hardcourt outdoor Loss
Hold
68.8%
Break
20.0%
18.11.2025R32 Kokoro Isomura vs Yusuke KusuharaChallenger Yokohama 5-7 3-6Hardcourt outdoor Loss
Hold
70.0%
Break
9.1%
12.11.2025R32 Kokoro Isomura vs Sho ShimabukuroChallenger Kobe 6-7 4-6Hardcourt indoor Loss
Hold
72.7%
Break
16.7%
03.11.2025R32 Kokoro Isomura vs Henrique RochaChallenger Matsuyama 7-5 4-6 1-6Hardcourt outdoor Loss
Hold
57.1%
Break
26.7%
30.10.2025R16 Kokoro Isomura vs Elias YmerChallenger Seoul 2-6 3-6Hardcourt outdoor Loss
Hold
50.0%
Break
11.1%
27.10.2025Round 19 Kokoro Isomura vs Yusuke TakahashiChallenger Seoul 6-2 6-4Hardcourt outdoor Win
Hold
77.8%
Break
55.6%
26.10.2025Round 14 Kokoro Isomura vs Dong Ju KimChallenger Seoul 6-4 6-3Hardcourt outdoor Win
Hold
66.7%
Break
60.0%
19.10.2025Round 14 Kokoro Isomura vs Naoki TajimaChallenger Suzhou 3-6 4-6Hardcourt outdoor Loss
Hold
66.7%
Break
10.0%
19.09.2025 Kokoro Isomura vs Kaichi UchidaITF M25 Takasaki 2-6 2-6Hardcourt outdoor Loss
Hold
25.0%
Break
25.0%
18.09.2025 Kokoro Isomura vs Yuta TomidaITF M25 Takasaki 6-3 6-1Hardcourt outdoor Win
Hold
87.5%
Break
62.5%
16.09.2025 Kokoro Isomura vs Hayato MatsuokaITF M25 Takasaki 7-5 3-6 6-4Hardcourt outdoor Win
Hold
80.0%
Break
25.0%
11.09.2025 Kokoro Isomura vs Mark WhitehouseITF M25 Sapporo 5-7 5-7Hardcourt outdoor Loss
Hold
66.7%
Break
16.7%
09.09.2025 Kokoro Isomura vs Taisei IchikawaITF M25 Sapporo 6-2 6-1Hardcourt outdoor Win
Hold
100.0%
Break
57.1%
02.09.2025R32 Kokoro Isomura vs Renta TokudaChallenger Shanghai 0-6 2-6Hardcourt outdoor Loss
Hold
14.3%
Break
14.3%
01.09.2025Round 19 Kokoro Isomura vs Petr Bar BiryukovChallenger Shanghai 7-6 7-5Hardcourt outdoor Win
Hold
83.3%
Break
23.1%
31.08.2025Round 45 Kokoro Isomura vs Ajeet RaiChallenger Shanghai 7-6 7-6Hardcourt outdoor Win
Hold
91.7%
Break
7.1%
30.08.2025SF Kokoro Isomura vs Oliver CrawfordChallenger Zhangjiagang 6-7 0-6Hardcourt outdoor Loss
Hold
66.7%
Break
0.0%
29.08.2025QF Kokoro Isomura vs Sanhui ShinChallenger Zhangjiagang 2-6 6-2 6-4Hardcourt outdoor Win
Hold
76.9%
Break
30.8%
27.08.2025R16 Kokoro Isomura vs Jie CuiChallenger Zhangjiagang 3-6 6-2 7-6Hardcourt outdoor Win
Hold
73.3%
Break
26.7%
26.08.2025R32 Kokoro Isomura vs Sergey FominChallenger Zhangjiagang 6-3 6-2Hardcourt outdoor Win
Hold
100.0%
Break
37.5%
12.08.2025 Kokoro Isomura vs Sidharth RawatITF M25 Bali 6-4 3-6 4-6Hardcourt outdoor Loss
Hold
85.7%
Break
6.7%
07.08.2025 Kokoro Isomura vs Yurii DzhavakianITF M25 Bali 1-6 3-6Hardcourt outdoor Loss
Hold
25.0%
Break
25.0%
06.08.2025 Kokoro Isomura vs Anthony SusantoITF M25 Bali 6-2 7-5Hardcourt outdoor Win
Hold
70.0%
Break
60.0%
28.07.2025R32 Kokoro Isomura vs Aleksandre BakshiChallenger Astana 1-6 7-6 3-6Hardcourt outdoor Loss
Hold
76.9%
Break
0.0%
12.07.2025 Kokoro Isomura vs Shintaro ImaiITF M15 Tokyo 4-6 7-6 4-6Hardcourt indoor Loss
Hold
75.0%
Break
11.8%
11.07.2025 Kokoro Isomura vs Colin SinclairITF M15 Tokyo 6-3 4-6 6-4Hardcourt indoor Win
Hold
92.9%
Break
20.0%
10.07.2025 Kokoro Isomura vs Yuta TomidaITF M15 Tokyo 7-5 6-3Hardcourt indoor Win
Hold
80.0%
Break
45.5%
08.07.2025 Kokoro Isomura vs Ryotaro MatsumuraITF M15 Tokyo 6-7 6-4 6-3Hardcourt indoor Win
Hold
93.3%
Break
23.5%
25.06.2025 Kokoro Isomura vs Sheng TangM15 Maanshan 6-3 6-4Hardcourt indoor Win
Hold
-
Break
-
19.06.2025 Kokoro Isomura vs Evan ZhuITF M25 Luzhou 6-7 6-7Hardcourt outdoor Loss
Hold
91.7%
Break
7.1%
17.06.2025 Kokoro Isomura vs Rigele TeITF M25 Luzhou 6-1 7-5Hardcourt outdoor Win
Hold
100.0%
Break
40.0%
12.06.2025 Kokoro Isomura vs Wishaya TrongcharoenchaikulITF M15 Luan 2-6 5-7Hardcourt outdoor Loss
Hold
60.0%
Break
10.0%
04.06.2025 Kokoro Isomura vs Hoyoung RohITF M25 Changwon 5-7 1-6Hardcourt outdoor Loss
Hold
-
Break
-
25.05.2025 Kokoro Isomura vs Linang XiaoITF M15 Luan 6-7 1-6Hardcourt outdoor Loss
Hold
40.0%
Break
30.0%
23.05.2025 Kokoro Isomura vs Saki TangeM15 Luan 6-1 6-0Surface pending Win
Hold
-
Break
-
15.05.2025 Kokoro Isomura vs Taiyo YamanakaITF M15 Luan 7-5 4-6 4-6Hardcourt outdoor Loss
Hold
62.5%
Break
31.2%