Kokoro Isomura vs Jie Cui — Zhangjiagang CH Round of 16

Zhangjiagang CH · CHALLENGER · Round of 16
JPN
Kokoro Isomura
#562ATP
1206ELO
1176Hard ELO
23 yrs · 175 cm · Right-handed
Last 10 · pre-match
LWLLLWLWLW
2 — 1
Sets
Monday, 25 August 2025
hard
CHN
Jie Cui
#470ATP
1383ELO
1354Hard ELO
28 yrs · 183 cm · Right-handed
Last 10 · pre-match
LLWLWWWLLL
Isomura K.
3-6 6-2 7-6
Cui J.
Isomura K.
367112
Cui J.
62691

Kokoro Isomura defeated Jie Cui 3-6 6-2 7-6 in the Zhangjiagang CH round of 16 on hard. The upset overturned the form book — Jie Cui came in ranked #470, defending last year's round of 16.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Isomura K.serving82% hold

wins 64% of points on serve vs Cui J.

Cui J.serving78% hold

wins 62% of points on serve vs Isomura K.

Even serve battle

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
Isomura K.Cui J.
1st serve in·Even
64%
64%
1st serve points won·Even
68%
67%
2nd serve points won·Even
49%
50%
Service points won·Even
61%
61%
Return points won·Even
38%
36%
Break points saved·Even
60%
56%
Aces / match·Slight edge
1.8
3.1
Double faults / match·Clear edge
3.0
1.9

Averages over each player's completed matches in the selected window (41 vs 47). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Isomura K.
5.2
Clear underdogUmpiry Score
  • Extended break: 28 days (−0.3)
Cui J.
6.1
Even matchUmpiry Score
Form & Matchup
3.9Hard Elo 1176
Surface ELO
6.1+177 Hard Elo edge
3.9Overall Elo 1206
ELO gap
6.1Overall Elo 1383
5.0No prior meetings
H2H
5.0
5.0
Surface form
2.9
0.0Lost last 2
Win streak
0.0
Fatigue & Travel
Minutes 14d
8.9
7.0
Prev. match
8.0
Context
5.0
Defending pts
6.0

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
Isomura K.Cui J.
Freshness·Clear edge
82
100

Isomura K.: 1 day rest · 1 match, 23 games (7d) · Cui J.: 15 days rest. Higher means fresher. About

Conditions

Court speed
Fastbig serves, short points
SlowFast
Final
Shimabukuro S.[3]
Crawford O.[6]
6-33-67-5
Semi-finals
Shimabukuro S.[3]
Uchiyama Y.[5]
6-37-65
Crawford O.[6]
Isomura K.
7-616-0
Quarter-finals
Uchiyama Y.[5]
Uchida K.
6-36-4
Isomura K.
Sin S.
2-66-26-4
Shimabukuro S.[3]
Simakin I.[7]
6-46-3
Crawford O.[6]
Tokuda R.
7-613-66-2
R16
Crawford O.[6]
Moriya H.
6-34-66-4
Tokuda R.
Sekulic P.
6-46-4
Sin S.
Sun F.[4]
6-36-1
Isomura K.
Cui J.
3-66-27-69
Uchiyama Y.[5]
Huang T.
6-26-4
Shimabukuro S.[3]
Peliwo F.
6-36-4
Uchida K.
Noguchi R.[2]
6-17-64
Simakin I.[7]
Charlton J.
6-46-4
R32
Sekulic P.
Tomic B.[1]
6-11-67-66
Charlton J.
Te R.
6-46-776-4
Tokuda R.
Binda A.
5-76-36-3
Moriya H.
Yevseyev D.
6-24-66-4
Isomura K.
Fomin S.
6-36-2
Simakin I.[7]
Wu T.
6-47-61
Peliwo F.
Bar Biryukov P.
6-16-2
Uchiyama Y.[5]
Kikuchi Y.
6-25-76-1
Uchida K.
Castelnuovo L.
7-646-3
Noguchi R.[2]
Xiao L.
7-666-1
Sun F.[4]
Mo Y.
3-66-36-4
Crawford O.[6]
Imamura M.
6-36-2
Sin S.
Shin W.
7-57-64
Cui J.
Gea A.[8]
5-77-646-0
Shimabukuro S.[3]
Watt J.
6-43-66-2
Huang T.
Uesugi K.
6-16-743-2