N. Koizumi vs Takuya Kumasaka | M15 Tanagura Round of 16

UMPIRY

M15 TanaguraR16HardThu 22 Oct

N. KoizumiJPN25%

VSClear favourite · Kumasaka T.

Takuya Kumasaka(2)ATP #603 · JPN75%

Win probabilityWho is more likely to winClear favourite · Kumasaka T.

25%75%

Clear edge for Kumasaka T. across form, surface and matchup. Upsets at this level happen in about 1 in 4 such matches.

ELO1 527

Hard ELO1 518

Last 106–4

Age23

ELO1 629

Hard ELO1 606

Last 104–6

Age28

N. Koizumi faces Takuya Kumasaka in the M15 Tanagura round of 16 on hard. N. Koizumi brings the better recent hard form (6 of 10).

Key context

Last match: N. Koizumi dropped just 4 games past Riku Takahata.
Last match: Takuya Kumasaka dropped just 5 games past R. Komagata.
Surface form: N. Koizumi 6 of 10, Takuya Kumasaka 4 of 10 on hard recently — N. Koizumi 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

They have not met before.

Evidence

Koizumi N.Kumasaka T.

FormLast 10 matches each · 2026

Win–loss6–44–6

Season win rate63% (10–6)39% (9–14)

RatingUmpiry ELO

Overall ELO15271629

Hard-court ELO15181606

Serve vs returnLast 6 vs 21 matches

1st-serve points won58%64%

Return points won43%39%

Aces / match1.52.4

ClutchLast 6 vs 21 matches

Break points saved55%61%

Draw

Odds

Conditions

SurfaceHard

Forecast15°C · Mainly clear

Wind14 km/h

Humidity63%

Cite this

Umpiry, "N. Koizumi vs Takuya Kumasaka — M15 Tanagura Round of 16", https://umpiry.com/match/2026-10-22/koizumi-vs-kumasaka-m15-tanagura-r16?utm_source=cite (as of 22 October 2026).