K. Boulter vs S. Ishii prediction

AI prediction

Probability for members

The model has K. Boulter winning this match. Create a free account to see with what probability, and the most likely set score.

Predicted winner: K. Boulter
Probability: Members only
Likely score: Members only

See the probability and scoreFree during the beta

Every prediction is computed before the match and never edited afterwards: the model's real accuracy is published match by match.

WTATokyohard court08:30Time to be confirmed

K. Boulter

S. Ishii

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Form and record before the match

Last 10 matches, oldest to most recent

K. Boulter

S. Ishii

5 – 5
Wins – losses: 2 – 8; 10 – 12
Sets won – lost: 5 – 18; 2 wins
Current streak: 6 losses; 22-21 (51%)
2026 record: 0-5 (0%); 81-63 (56%)
Record on hard court: 8-9 (47%)

ATP, WTA and Challenger singles matches played since 2020 by K. Boulter and S. Ishii, before this match.

Recent matches

K. Boulter's last five matches

VV. GolubicOsaka 2026 · Round of 16 · 21 October 20266-2 6-1
VH. SakatsumeOsaka 2026 · Round of 32 · 20 October 20266-3 6-1
DD. ShnaiderWuhan 2026 · Round of 64 · 13 October 20263-6 1-6
DK. MuchovaBeijing 2026 · Round of 64 · 2 October 20266-7 1-6
VM. HontamaBeijing 2026 · Round of 128 · 30 September 20266-3 6-4

S. Ishii's last five matches

DM. StoianaOsaka 2026 · Qualifying · 18 October 20264-6 5-7
DK. CrossNewport 2026 · Round of 32 · 8 July 20262-6 3-6
DK. QuevedoWimbledon 2026 · Qualifying · 23 June 20260-6 3-6
DV. ValdmannovaIlkley 2026 · Qualifying · 7 June 20263-6 1-6
DV. ValdmannovaBirmingham 2026 · Qualifying · 30 May 20266-3 2-6 4-6

Head-to-head since 2020

No direct meeting since 2020 on the ATP, WTA and Challenger tours.

Road through the tournament

This is K. Boulter's first match of the tournament. This is S. Ishii's first match of the tournament. In 2025, the tournament was won by B. Bencic, who beat L. Noskova in the final (6-2 6-3).

Key numbers

In deciding sets, K. Boulter wins 59 % of the time (81 matches), S. Ishii 55 % (11 matches). After losing the first set, K. Boulter turned 24 % of matches around (103 occasions), S. Ishii 22 % (18 occasions). After winning the first set, K. Boulter went on to win 84 % of matches, S. Ishii 69 %.

Completed ATP, WTA and Challenger singles matches since 2020, before this match, retirements and walkovers excluded.

Frequently asked questions about K. Boulter – S. Ishii

Who is the favourite between K. Boulter and S. Ishii?: No bookmaker odds are available for this match. Pronocast's model has K. Boulter winning. The win probability and most likely score are for members before the match.
When is the K. Boulter – S. Ishii match?: On Saturday, 24 October 2026, at the Tokyo tournament (hard court). The time is still to be confirmed.
What is the head-to-head between K. Boulter and S. Ishii?: No meeting between K. Boulter and S. Ishii appears since 2020 on the ATP, WTA and Challenger tours.
Where can I see the prediction for K. Boulter – S. Ishii?: In the Pronocast app, for members: probability of winning, most likely score and comparison with the odds. It will be published on this page with the result once the match is over.

How the model computes its predictions