WTA · Rank #639

Ikumi Yamazaki

25yrs #348Peak Rank

60%Accuracy

Matches Analyzed

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ITF Women W50 Nanao Hard ITF Women W50 Nanao (Hard) 1

2 ▴1.56

2 ▴1.56

ITF Women W35 Kyoto Hard ITF Women W35 Kyoto (Hard) 1

2 ▾1.46

O19.5 ▾1.62

ITF Women W50 Kursumlijska Banja Clay ITF Women W50 Kursumlijska Banja (Clay) 1

2 ▾2.45

U21.5 ▾1.68

ITF Women W50 Knokke - Heist Clay ITF Women W50 Knokke - Heist (Clay) 1

1 ▴1.34

1 ▴1.34

ITF Women W15 Luan Hard ITF Women W15 Luan (Hard) 4

2 ▾1.78

O20.5 ▾1.8

1 ▾1.79

U20.5 ▾1.92

1 ▾2.9

U20.5 ▴1.78

2 1.05

2 1.05

ITF Women W15 Maanshan Hard ITF Women W15 Maanshan (Hard) 2

2 2.28

O20.5 1.85

1 ▾1.08

1 ▾1.08

ITF Women W35 Taipei Hard ITF Women W35 Taipei (Hard) 1

1 2.35

O20.5 1.85

ITF Women W35 Taipei Hard ITF Women W35 Taipei (Hard) 1

1 ▾1.28

1 ▾1.28

ITF Women W15 Tokyo Hard ITF Women W15 Tokyo (Hard) 5

2 ▾1.48

2 ▾1.48

1 ▴1.95

1 ▴1.95

2 ▾1.43

2 ▾1.43

2 ▴1.77

2 ▴1.77

1 ▴1.34

1 ▴1.34

ITF Women W100 Takasaki Hard ITF Women W100 Takasaki (Hard) 1

2 ▾1.47

2 ▾1.47

ITF Women W35 Andong Hard ITF Women W35 Andong (Hard) 1

1 1.26

1 1.26

ITF Women W35 Changwon Hard ITF Women W35 Changwon (Hard) 1

2 ▴1.8

2 ▴1.8

Record by surface

Hard

12-13

Clay

0-5

Overall 12-19

Our AI on this player 18 correct of 30

From the matches in our database

About Ikumi Yamazaki

Ikumi Yamazaki is a 25-year-old professional tennis player. That is below a career-high of world No. 348. Over the last 52 weeks the serve has landed 69.9% of first deliveries, winning 54.5% of those points. Against serve the numbers sit mid-table — 45.2% of points won, 572% of break chances taken. Service games rarely slip away: 826.6% of them are held. No surface has produced a winning record so far — Hard 12-13, Clay 0-5.

Lately it has not been coming together — 5 defeats in the last 5 outings. The longest match we have on record ran to 31 games, against T. Naklo. More of the matches we cover came at ITF Women W15 Tokyo than anywhere else — 5 of them. Predictions cover match winner and score, alongside serve, return and break-point statistics. Most recently seen in our data at ITF Women W50 Nanao.

Serve & Return

First Serve %

—

1st Serve Won

—

2nd Serve Won

—

Aces / Match

0.5

Double Faults / Match

3.3

Break Pts Saved

—

Break Pts Converted

—

Return Pts Won

45.4%

Service Hold %

—

Total Pts Won

96.9%

Records Last 12 months

Titles

Finals

Semis or better

Events played

Tournament Results 1 title

Deepest runs first, not by date

Season by season

2026

2026so far

0–1

Won-lost

Matches

—

Tiebreaks

Aces / Match

Double Faults / Match

First Serve % 71.7%

1st Serve Won 54.5%

2nd Serve Won 23.1%

Break points won 50%

Break Pts Saved 16.7%

2025

0–1

Won-lost

Matches

—

Tiebreaks

Aces / Match

Double Faults / Match

First Serve % 73.8%

1st Serve Won 43.8%

2nd Serve Won 29.4%

Break points won 75%

Break Pts Saved 41.7%

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 Ikumi Yamazaki?

Our model has graded 30 matches involving Ikumi Yamazaki and got 18 right — a hit rate of 60%. The 20 most recent are listed below, each with the pick we made and how it finished.