Jason Kubler vs Rei Sakamoto — Busan CH Round of 32

Busan CH · CHALLENGER · Round of 32
AUS
Jason Kubler
#468ATP
1685ELO
1635Hard ELO
33 yrs · 178 cm · Right-handed
Last 10 · pre-match
WWWWWWWLLW
2 — 0
Sets
Monday, 14 April 2025
hard
JPN
Rei Sakamoto
#161ATP
1608ELO
1589Hard ELO
$233kYTD
$492kCAREER
20 yrs · 193 cm · Right-handed
Last 10 · pre-match
LWLWWLLWWW
Kubler J.
7-5 6-4
Sakamoto R.
Kubler J.
762
Sakamoto R.
540

Jason Kubler defeated Rei Sakamoto 7-5 6-4 in the Busan CH round of 32 on hard.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Kubler J.serving88% hold

wins 68% of points on serve vs Sakamoto R.

Sakamoto R.serving83% hold

wins 65% of points on serve vs Kubler J.

Serve-dominated — both hold easily, expect tiebreaks

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Statistics

This season
Kubler J.Sakamoto R.
1st serve in·Even
62%
63%
1st serve points won·Even
74%
73%
2nd serve points won·Even
52%
52%
Service points won·Even
66%
65%
Return points won·Even
39%
37%
Break points saved·Even
60%
61%
Aces / match·Even
6.6
6.9
Double faults / match·Even
2.4
2.1

Averages over each player's completed matches in the selected window (38 vs 87). ATP, WTA & Challenger.

Clutch

Under pressure
Kubler J.Sakamoto R.
Clutch Rating·Slight edge
59
49
Break points saved·Even
90
87
Break points won·Dominant
46
8
Deciding sets·Clear edge
79
93
Tiebreaks·Clear edge
37
23

Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About

Umpiry Score

Pre-match
Kubler J.
4.9
Heavy underdogUmpiry Score
  • Extended break: 70 days (−1.2)
Sakamoto R.
5.9
Even matchUmpiry Score
  • Extended break: 26 days (−0.3)
Form & Matchup
5.4+46 Hard Elo edge
Surface ELO
4.6Hard Elo 1589
5.7Overall Elo 1685
ELO gap
4.3Overall Elo 1608
5.0No prior meetings
H2H
5.0
6.1
Surface form
7.2
Fatigue & Travel
Prev. match
8.0
Context
5.0
Defending pts
5.0

The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.

Freshness

Recent load
Kubler J.Sakamoto R.
Freshness·
—
95

Sakamoto R.: 11 days rest · 2 matches (14d). Higher means fresher. About

Conditions

Court speed
Slowlow bounce, long rallies
SlowFast
Final
Atmane T.[8]
Walton A.[1]
6-36-4
Semi-finals
Walton A.[1]
Kubler J.
7-666-737-5
Atmane T.[8]
Holt B.[3]
7-653-66-3
Quarter-finals
Walton A.[1]
Uchiyama Y.[5]
7-55-76-3
Kubler J.
Chung H.
6-26-4
Holt B.[3]
Hsu Y.
6-26-2
Atmane T.[8]
Simakin I.
6-41-66-3
R16
Chung H.
Tu L.[6]
3-66-36-4
Uchiyama Y.[5]
Kwon S.
6-11-67-61
Walton A.[1]
Shimizu Y.
6-27-64
Hsu Y.
Sin S.
6-26-2
Holt B.[3]
Bolt A.
6-36-4
Atmane T.[8]
Jasika O.
6-32-66-4
Simakin I.
Svajda Z.
7-636-1
Kubler J.
Campana Lee G.
6-36-0
R32
Chung H.
Ruusuvuori E.
6-26-4
Tu L.[6]
Sharipov M.
6-23-66-1
Atmane T.[8]
Mccabe J.
7-647-62
Shimizu Y.
Shimabukuro S.
6-36-1
Walton A.[1]
Noguchi R.
6-06-2
Campana Lee G.
Schoolkate T.[4]
6-43-66-3
Hsu Y.
Trotter J.[7]
6-36-3
Bolt A.
Watanuki Y.
6-37-64
Holt B.[3]
Lestienne C.
1-67-626-4
Jasika O.
Durasovic V.
0-66-36-2
Uchiyama Y.[5]
Rosenkranz M.
7-646-3
Svajda Z.
Eubanks C.[2]
3-67-636-0
Kwon S.
Escoffier A.
3-66-17-5
Simakin I.
Kachmazov A.
6-776-46-3
Kubler J.
Sakamoto R.
7-56-4
Sin S.
Monday J.
6-36-4