Wakana Sonobe vs Nikola Bartunkova — Tokyo Round of 32

Tokyo · WTA · Round of 32
JPN
Wakana Sonobe
#537WTA
1506ELO
1523Hard ELO
18 yrs · Left-handed
Last 10 · pre-match
LLLLWLWWLL
2 — 0
Sets
Monday, 20 October 2025
hard
Nikola Bartunkova
CZE
Nikola Bartunkova
#48WTA
1788ELO
1719Hard ELO
$507kYTD
$713kCAREER
20 yrs · Right-handed
Last 10 · pre-match
LWWLWWLLWW
Sonobe W.
6-4 6-3
Bartunkova N.
Sonobe W.
662
Bartunkova N.
430

Wakana Sonobe defeated Nikola Bartunkova 6-4 6-3 in the Tokyo round of 32 on hard. The upset overturned the form book — Nikola Bartunkova came in ranked #48.

Key context

  • Match story: Wakana Sonobe closed it out in two sets, 6–4 6–3.

Head to head

No previous meetings on record.

Serve vs return

This season
Sonobe W.serving66% hold

wins 57% of points on serve vs Bartunkova N.

Bartunkova N.serving73% hold

wins 60% of points on serve vs Sonobe W.

Serve advantage — Bartunkova N.

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
Sonobe W.Bartunkova N.
1st serve in·Even
57%
54%
1st serve points won·Slight edge
65%
70%
2nd serve points won·Even
45%
47%
Service points won·Even
57%
59%
Return points won·Even
45%
46%
Break points saved·Even
54%
57%
Aces / match·Even
3.3
2.9
Double faults / match·Dominant
4.1
6.2

Averages over each player's completed matches in the selected window (28 vs 80). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Sonobe W.
5.5
Slight disadvantageUmpiry Score
Bartunkova N.
7.3
Strong advantageUmpiry Score
Form & Matchup
3.2Hard Elo 1523
Surface ELO
6.8+196 Hard Elo edge
2.8Overall Elo 1506
ELO gap
7.2Overall Elo 1788
5.0No prior meetings
H2H
5.0
4.2
Surface form
7.8
0.0Lost last 3
Win streak
Fatigue & Travel
9.2
Minutes 14d
9.0
Prev. match
7.0
Country comfort
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
Sonobe W.Bartunkova N.
Freshness·
—
91

Bartunkova N.: 9 days rest · 3 matches (14d). Higher means fresher. About

Conditions

Court speed
Fastbig serves, short points
SlowFast
Weather
20°COvercast
Wind 5 km/hHumidity 81%

Draw

Final
Bencic B.[5]
Noskova L.[6]
6-26-3
Semi-finals
Noskova L.[6]
Rybakina E.[2]
W/O
Bencic B.[5]
Kenin S.[10]
7-653-66-2
Quarter-finals
Noskova L.[6]
Kalinskaya A.
6-01-0
Rybakina E.[2]
Mboko V.[9]
6-37-64
Kenin S.[10]
Alexandrova E.[3]
6-02-67-63
Bencic B.[5]
Muchova K.[8]
3-67-57-5
R16
Kenin S.[10]
Sonobe W.
3-66-17-62
Muchova K.[8]
Joint M.
6-37-5
Kalinskaya A.
Shnaider D.[7]
7-642-67-65
Noskova L.[6]
Kessler M.
5-76-36-4
Alexandrova E.[3]
Cristian J.
6-16-2
Bencic B.[5]
Gracheva V.
6-46-3
Rybakina E.[2]
Fernandez L.
6-46-3
Mboko V.[9]
Lys E.
6-16-1
R32
Mboko V.[9]
Andreescu B.
6-36-3
Muchova K.[8]
Vondrousova M.
6-21-0
Shnaider D.[7]
Yastremska D.
6-36-1
Sonobe W.
Bartunkova N.
6-46-3
Lys E.
Boulter K.
6-26-1
Fernandez L.
Sakkari M.
7-656-4
Joint M.
Golubic V.
1-67-656-2
Kessler M.
Bucsa C.
3-67-56-3
Kalinskaya A.
Lamens S.
6-36-1
Kenin S.[10]
Uchijima M.
6-16-3
Cristian J.
Charaeva A.
6-26-3
Gracheva V.
Wang X.
4-66-36-4