Yeon Woo Ku vs Naho Sato — W50 Yokohama Round of 16

W50 Yokohama · CHALLENGER · Round of 16
KOR
Yeon Woo Ku
1519ELO
1500Hard ELO
23 yrs
Last 10 · pre-match
LLWWWWWWWW
0 — 0
Sets
Monday, 24 November 2025
hard
JPN
Naho Sato
#611WTA
25 yrs · Right-handed
Last 10 · pre-match
LWWLWWLWWL
Ku Y.
6-3 6-1
Sato N.
Ku Y.
662
Sato N.
31–

Yeon Woo Ku defeated Naho Sato 6-3 6-1 in the W50 Yokohama round of 16 on hard.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Ku Y.serving45% hold

wins 48% of points on serve vs Sato N.

Sato N.serving31% hold

wins 42% of points on serve vs Ku Y.

Baseline battle — serve is shaky, expect plenty of breaks

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
Ku Y.Sato N.
1st serve in·Even
67%
64%
1st serve points won·Even
61%
57%
2nd serve points won·Slight edge
47%
41%
Service points won·Slight edge
56%
51%
Return points won·Even
49%
48%
Break points saved·Slight edge
56%
50%
Aces / match·Slight edge
1.1
0.4
Double faults / match·Slight edge
3.3
3.9

Averages over each player's completed matches in the selected window (89 vs 43). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Ku Y.
6.5
Marginal edgeUmpiry ScorePartial · surface data limited
Sato N.
6.1
Even matchUmpiry ScorePartial · surface data limited
Form & Matchup
0.0No prior meetings
H2H
10.0
8.3
Surface form
3.5
7.04-match win streak
Win streak
0.0Lost last 3
Fatigue & Travel
0.0
3-set count
7.0
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
Ku Y.Sato N.
Freshness·
100
—

Ku Y.: 19 days rest. Higher means fresher. About

Conditions

Court speed
Mediumbalanced pace
SlowFast

Draw

Final
Zhang S.
Ku Y.
6-36-2
Semi-finals
Zhang S.
Kolodynska J.
6-46-3
Ku Y.
Morvayova V.
6-26-1
Quarter-finals
Kolodynska J.
Chang H.
7-652-67-66
Morvayova V.
Astakhova D.
3-66-46-3
Zhang S.
Park S.
6-26-2
Ku Y.
Ma Y.
7-56-3
R16
Ma Y.
Sidorova K.
7-657-61
Kolodynska J.
Cengiz B.
6-36-3
Astakhova D.
Zhang Y.
4-66-26-3
Morvayova V.
Matsuda R.
6-26-3
Ku Y.
Sato N.
6-36-1
Zhang S.
Yang Y.
6-36-1
Park S.
You X.
6-33-66-2
Chang H.
Saigo R.
6-43-66-4
R32
Yang Y.
Bains N.
6-46-1
Ku Y.
Shimizu E.
6-16-1
Matsuda R.
Sawangkaew M.
2-67-57-63
Kolodynska J.
Naito Y.
6-36-3
You X.
Akita S.
6-23-67-66
Zhang S.
Kinoshita H.
6-26-1
Zhang Y.
Kitahara Y.
7-56-3
Saigo R.
Wong H.
6-16-0
Astakhova D.
Kaji H.
6-16-1
Sato N.
Nagata A.
6-16-4
Morvayova V.
Koike E.
6-13-66-4
Cengiz B.
Inoue H.
6-27-63
Chang H.
Ren Y.
6-17-5
Ma Y.
Hosogi S.
6-37-5
Park S.
Wang Y.
6-06-2
Sidorova K.
Aikawa M.
7-646-3