Gabriel Diallo vs Rei Sakamoto | Almaty Qualifying Round of 8

UMPIRY

AlmatyQ8QualifyingHardSun 18 Oct · 11:00CENTER COURT · Next on

Gabriel DialloATP #121 · CAN33%

VSClear favourite · Sakamoto R.

Rei SakamotoATP #137 · JPN67%

Win probabilityWho is more likely to winClear favourite · Sakamoto R.

33%67%

Clear edge for Sakamoto R. 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

Diallo G.5.3/10

Clear underdog

Sakamoto R.4.9/10

Heavy underdog

Why

Surface+89 Hard Elo edgeAgainst the prediction · Diallo G.

Overall ratingOverall Elo 1716Against the prediction · Diallo G.

This eventReached the last 16 here last yearAgainst the prediction · Diallo G.

Long matches1 three-setter in 14 daysAgainst the prediction · Diallo G.

Head-to-headNo prior meetingsBoth players

ELO1 896

Hard ELO1 769

Last 105–5

Age25

Height203 cm

PlaysRight

EarningsCareer $3.4M2026 $742K

ELO1 873

Hard ELO1 768

Last 106–4

Age20

Height193 cm

PlaysRight

EarningsCareer $570K2026 $311K

Gabriel Diallo faces Rei Sakamoto in the Almaty qualifying round of 8 on hard. Gabriel Diallo is the paper favourite — ranked #121, defending last year's round of 16, a roughly 90-point hard Elo advantage — but Rei Sakamoto arrives in form, winning 3 of their last 4 on hard to Gabriel Diallo's 2 of 4.

Key context

Under pressure: Rei Sakamoto has the edge on pressure points (Clutch Rating 49 vs Gabriel Diallo's 29).
Last match: Rei Sakamoto dropped just 3 games past Amir Omarkhanov.
Surface form: Gabriel Diallo 2 of 4, Rei Sakamoto 3 of 4 on hard recently — Rei Sakamoto the sharper of late.

Common opponents

3 shared · last 12 months

Diallo G. and Sakamoto R. faced 3 of the same opponents in the last 12 months. Diallo G. went 2–2 (50%) against them, Sakamoto R. 2–1 (67%). Results against comparable opponents are close (0 : 0 better-results split).

2–250%Diallo G. · better vs 0Record vs common opponents2–167%Sakamoto R. · better vs 0

Vs common opponents · derived from scorelines

5–5Sets4–3

55–51Games40–39

1–3Tiebreaks2–1

2–1Deciding sets1–0

Only 3 common opponents — small sample, treat as indicative.

vs De Minaur A.#9L3-6London · grassL6-7(6) 4-6Shanghai Masters · hard
vs Rublev A.#23W6-7 7-6 6-3Indian Wells Masters · hardW6-4 6-4Shanghai Masters · hard
vs Jacquet K.#76W6-7(1) 6-3 6-2Montreal · hardW7-6(6) 4-6 7-6(8)Shanghai Masters · hard

Head-to-head

They have not met before.

Evidence

Diallo G.Sakamoto R.

FormLast 10 matches each · 2026

Win–loss5–56–4

Season win rate37% (11–19)63% (39–23)

RatingUmpiry ELO

Overall ELO18961873

Hard-court ELO17691768

Serve vs returnLast 28 vs 59 matches

1st-serve points won71%74%

Return points won32%37%

Aces / match7.38.3

ClutchLast 28 vs 59 matches

Break points saved56%58%

When it starts

CENTER COURT · Next on · Starts at 11:00

1This match: Diallo G. v Sakamoto R.This match
2Shevchenko A. v Sakellaridis S.Not before 15:00

Draw

Odds

Conditions

CENTER COURT · 11:00 local

SurfaceHard · fast

Forecast12°C · Clear

Wind4 km/h

Humidity35%

Court pace fast: big serves, short points.

Cite this

Umpiry, "Gabriel Diallo vs Rei Sakamoto — Almaty Qualifying Round of 8", https://umpiry.com/match/2026-10-18/diallo-vs-sakamoto-almaty-q8?utm_source=cite (as of 18 October 2026).