ATP · Rank #539

Kokoro Isomura

23yrs 1.75 m 72 kg Right

72.1%Accuracy

Matches Analyzed

Recent Form

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Recent & Upcoming Tap a match for full analysis

ITF Men M25 Sapporo Hard ITF Men M25 Sapporo (Hard) 1

2 1.85

2 1.85

Challenger Zhangjiagang China Qualifying Hard Challenger Zhangjiagang China Qualifying (Hard) 1

2 ▾1.61

2 ▾1.61

ITF Men M25 Taipei Hard ITF Men M25 Taipei (Hard) 1

1 ▴1.22

1 ▴1.22

ITF Men M15 Maanshan Hard ITF Men M15 Maanshan (Hard) 5

1 ▴2.1

O20.5 ▴1.76

2 ▾2.7

O20.5 ▾1.6

1 ▾2.19

O19.5 ▾1.58

1 ▴1.29

O20.5 ▾1.85

1 ▴2.02

O19.5 1.57

Challenger Astana Kazakhstan Hard Challenger Astana Kazakhstan (Hard) 3

1 ▴1.53

U24.5 ▾1.59

1 ▾1.82

1 ▾1.82

1 ▾2.07

U23.5 ▾1.61

Challenger Vancouver Canada Qualifying Hard Challenger Vancouver Canada Qualifying (Hard) 1

2 ▾1.53

2 ▾1.53

Challenger Winnipeg Canada Qualifying Hard Challenger Winnipeg Canada Qualifying (Hard) 1

2 ▾1.57

2 ▾1.57

Challenger Granby Canada Qualifying Hard Challenger Granby Canada Qualifying (Hard) 2

1 ▾1.38

1 ▾1.38

2 ▴2.27

U22.5 ▴1.7

ITF Men M15 Tokyo Hard ITF Men M15 Tokyo (Hard) 2

2 ▾1.55

O21.5 ▴1.88

1 ▴1.21

1 ▴1.21

ITF Men M15 Tokyo Hard ITF Men M15 Tokyo (Hard) 3

2 ▾2.8

O20.5 ▾1.8

2 ▴1.58

2 ▴1.58

1 ▾2.12

O21.5 ▾1.8

Record by surface

Hard

22-22

Overall 22-22

Our AI on this player 31 correct of 43

From the matches in our database

Most-played opponents

Duckhee Lee 2 meetings 2-0 Uisung Park 2 meetings 2-0 Leo Vithoontien 2 meetings 0-2

About Kokoro Isomura

Kokoro Isomura is a 23-year-old right-handed professional tennis player, currently ranked world No. 539. The serve is the vulnerable side, at 4 double faults per match and 67.3% of first-serve points won. Breaking is the real weapon here: 45.6% of break chances get taken. Across everything played, 61.8% of all points end up on this side of the net. Almost the entire record comes from one surface, hard (22-22).

Results keep swinging: 2 up and 3 down across the last 5. The longest match we have on record ran to 38 games, against R. Taguchi. Predictions cover match winner and score, alongside serve, return and break-point statistics. Most recently seen in our data at ITF Men M25 Sapporo.

Serve & Return

First Serve %

59.1%

1st Serve Won

67.4%

2nd Serve Won

47.1%

Aces / Match

1.9

Double Faults / Match

5.8

Break Pts Saved

61.8%

Break Pts Converted

76.7%

Return Pts Won

41.9%

Service Hold %

148%

Total Pts Won

71.2%

Records Last 12 months

Titles

Finals

Semis or better

Events played

Tournament Results

ITF M15 Maanshan 7 Men ITF Final ITF M15 Maanshan 5 Men ITF Semi-Finals ITF M15 Tokyo 3 Men ITF Quarter-Finals ITF M25 Luzhou Men ITF Quarter-Finals

ITF M25 Takasaki Men ITF Quarter-Finals

Deepest runs first, not by date

Season by season

2026

2026so far

9–11

Won-lost

Matches

5–2

Tiebreaks

2.3

Aces / Match

4.6

Double Faults / Match

First Serve % 63.9%

1st Serve Won 66.5%

2nd Serve Won 46.4%

Break points won 38.1%

Break Pts Saved 63.2%

2025

14–12

Won-lost

Matches

5–3

Tiebreaks

1.3

Aces / Match

2.7

Double Faults / Match

First Serve % 66%

1st Serve Won 63.2%

2nd Serve Won 44.8%

Break points won 33.3%

Break Pts Saved 62.4%

2024

8–7

Won-lost

Matches

2–0

Tiebreaks

1.8

Aces / Match

2.8

Double Faults / Match

First Serve % 65.8%

1st Serve Won 57.9%

2nd Serve Won 50.1%

Break points won 40.4%

Break Pts Saved 57.3%

Season totals from the tour feed, singles only. The won-lost line is the tour's own count and can differ from the record under Predictions, which counts the matches we cover. A dash means the season holds nothing to measure that figure from.

Frequently Asked Questions

How accurate are the AI predictions for Kokoro Isomura?

Our model has graded 43 matches involving Kokoro Isomura and got 31 right — a hit rate of 72.1%. The 20 most recent are listed below, each with the pick we made and how it finished.

Who has Kokoro Isomura played most often?

Of the matches we cover, Kokoro Isomura has met Duckhee Lee most often — 2 times, with a 2-0 record.