Kokoro Isomura vs Ji Sung Nam — Nonthaburi 1 CH Qualifying Round 1

Nonthaburi 1 CH · CHALLENGER · Qualifying Round 1
JPN11
Kokoro Isomura
#557ATP
1206ELO
1176Hard ELO
23 yrs · 175 cm · Right-handed
Last 10 · pre-match
LLLWLWLWLL
2 — 1
Sets
Monday, 5 January 2026
hard
KOR
Ji Sung Nam
32 yrs · 183 cm · Right-handed
Last 10 · pre-match
LLLLLWWLLL
Isomura K.
1-6 7-6 6-4
Nam J.
Isomura K.
17862
Nam J.
66641

Kokoro Isomura defeated Ji Sung Nam 1-6 7-6 6-4 in the Nonthaburi 1 CH qualifying round 1 on hard.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Isomura K.serving84% hold

wins 65% of points on serve vs Nam J.

Nam J.serving81% hold

wins 64% 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.Nam J.
1st serve in·Slight edge
64%
57%
1st serve points won·Even
68%
66%
2nd serve points won·Even
52%
51%
Service points won·Even
62%
59%
Return points won·Even
35%
35%
Break points saved·Slight edge
61%
52%
Aces / match·Slight edge
2.1
3.3
Double faults / match·Slight edge
2.8
2.4

Averages over each player's completed matches in the selected window (16 vs 7). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Isomura K.
4.5
Heavy underdogUmpiry ScorePartial · surface data limited
  • Extended break: 42 days (−0.7)
Nam J.
5.2
Clear underdogUmpiry ScorePartial · surface data limited
  • Extended break: 49 days (−0.7)
Form & Matchup
5.0No prior meetings
H2H
5.0
3.2
Surface form
5.7
0.0Lost last 4
Win streak
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.

Conditions

Court speed
Fastbig serves, short points
SlowFast
Q2
Matsuoka H.[1]
Boulais J.[12]
6-46-3
Colson T.[9]
Weber A.[2]
7-636-2
Matsuda K.
Pantaratorn K.
6-36-2
Shiraishi H.[4]
Isomura K.[11]
6-20-66-1
Ichikawa T.
Sciahbasi L.
7-56-4
Moriya H.[7]
Imai S.
3-67-666-1
Q1
Matsuoka H.[1]
Chanta T.
7-56-4
Boulais J.[12]
Charlton J.
6-47-65
Weber A.[2]
Suksumrarn T.
6-36-1
Colson T.[9]
Kikuchi Y.
6-06-1
Matsuda K.
Ribecai M.[3]
1-67-57-68
Shiraishi H.[4]
Boosarawongse T.
6-26-2
Isomura K.[11]
Nam J.
1-67-666-4
Sciahbasi L.
Takahashi Y.[5]
6-26-3
Ichikawa T.
Mochizuki Y.[10]
7-56-3
Imai S.
Zhukov M.[6]
6-46-4
Moriya H.[7]
Malaszszak M.
6-13-66-3
Pantaratorn K.
Huang T.[8]
6-16-2