Hikaru Shiraishi vs Sho Katayama | Preview, H2H & Win Probability

UMPIRY

M15 Yanagawa CityR32HardWed 28 Oct · 10:00

Hikaru Shiraishi(1)ATP #594 · JPN71%

VSClear favourite · Shiraishi H.

Sho KatayamaJPN29%

Win probabilityWho is more likely to winClear favourite · Shiraishi H.

71%29%

Clear edge for Shiraishi H. across form, surface and matchup. Upsets at this level happen in about 1 in 3 such matches.

Umpiry ScoreMatchup strength, 0–10 · not a probability

Shiraishi H.5.0/10

Heavy underdogBased on 5/6 signal groups5/6

Katayama S.5.1/10

Clear underdogBased on 5/6 signal groups5/6

Why

Surface form3 of last 10 on hardAgainst the prediction · Katayama S.

Head-to-headLeads 1–0 on hardAgainst the prediction · Katayama S.

Recent runLost last 4Both players

This eventDidn't play here last yearBoth players

ELO1 638

Hard ELO1 616

Last 104–6

Age26

ELO1 598

Hard ELO1 578

Last 106–4

Age37

Hikaru Shiraishi faces Sho Katayama in the M15 Yanagawa City round of 32 on hard. Sho Katayama holds the paper edge — leading the head-to-head 1–0.

Key context

Head-to-head: Sho Katayama leads the head-to-head 1–0. Last met at M15 Yanagawa 2 2023.
Surface form: Hikaru Shiraishi 4 of 10, Sho Katayama 6 of 10 on hard recently — Sho Katayama the sharper of late.

Common opponents

0 shared · last 12 months

No common opponents in the last 12 months. Surface form and ELO carry more weight here.

Head-to-head

1 meeting · Katayama S. leads 1–0

Katayama S.December 2023M15 Yanagawa 2Hard6-3 2-0

Evidence

Shiraishi H.Katayama S.

FormLast 10 matches each · 2026

Win–loss4–66–4

Season win rate41% (12–17)0% (0–1)

RatingUmpiry ELO

Overall ELO16381598

Hard-court ELO16161578

Serve vs returnLast 22 vs 1 matches

1st-serve points won67%60%

Return points won36%37%

Aces / match2.11.0

ClutchLast 22 vs 1 matches

Break points saved58%43%

Draw

Odds

Conditions

10:00 local

SurfaceHard

Forecast17°C · Clear

Wind9 km/h

Humidity58%

Cite this

Umpiry, "Hikaru Shiraishi vs Sho Katayama — M15 Yanagawa City Round of 32", https://umpiry.com/match/2026-10-28/katayama-vs-shiraishi-m15-yanagawa-city-r32?utm_source=cite (as of 28 October 2026).