Dayeon Back vs Jelena Ostapenko — Seoul Round of 32

Seoul · WTA · Round of 32
KOR
Dayeon Back
#260WTA
24 yrs
Last 10 · pre-match
WWWWWWWWWW
2 — 1
Sets
Monday, 9 October 2023
hard
Jelena Ostapenko
LAT2
Jelena Ostapenko
#29WTA
1855ELO
1794Hard ELO
$1.2MYTD
$20MCAREER
29 yrs · 177 cm · Right-handed
Last 10 · pre-match
LWWLWWWLWL
Back D.
3-6 6-1 7-6
Ostapenko J.
Back D.
36772
Ostapenko J.
61641

Dayeon Back defeated Jelena Ostapenko 3-6 6-1 7-6 in the Seoul round of 32 on hard. The upset overturned the form book — Jelena Ostapenko came in ranked #29, defending last year's final.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Back D.serving67% hold

wins 57% of points on serve vs Ostapenko J.

Ostapenko J.serving60% hold

wins 54% of points on serve vs Back D.

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

Serve & return on hard

Back D.Ostapenko J.
—
Serve
10
—
Return
45

Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About

Statistics

This season
Back D.Ostapenko J.
1st serve in·Slight edge
66%
58%
1st serve points won·Even
62%
66%
2nd serve points won·Even
44%
43%
Service points won·Even
56%
57%
Return points won·Even
49%
45%
Break points saved·Even
52%
54%
Aces / match·Dominant
0.9
4.0
Double faults / match·Dominant
2.4
5.3

Averages over each player's completed matches in the selected window (98 vs 163). ATP, WTA & Challenger.

Clutch

Under pressure
Back D.Ostapenko J.
Clutch Rating·Dominant
52
88
Break points saved·Dominant
19
79
Break points won·Slight edge
91
100
Deciding sets·Even
93
96
Tiebreaks·
—
87

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

Umpiry Score

Pre-match
Back D.
4.3
Heavy underdogUmpiry ScorePartial · surface data limited
  • Extended break: 178 days (−1.5)
Ostapenko J.
5.1
Clear underdogUmpiry ScorePartial · surface data limited
  • Recent retirement (−1.5)
Form & Matchup
5.0No prior meetings
H2H
5.0
Surface form
6.0
Fatigue & Travel
Minutes 14d
7.4
3-set count
7.0
Prev. match
8.0
Context
6.0
Defending pts

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
Back D.Ostapenko J.
Freshness·
—
96

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

Conditions

Court speed
Mediumbalanced pace
SlowFast

Draw

Final
Pegula J.[1]
Yuan Y.
6-26-3
Semi-finals
Pegula J.[1]
Wickmayer Y.
6-46-3
Yuan Y.
Bektas E.
6-736-46-2
Quarter-finals
Yuan Y.
Bouzkova M.[4]
7-57-67
Wickmayer Y.
Kudermetova P.
6-36-1
Bektas E.
Birrell K.
4-66-36-2
Pegula J.[1]
Liu C.
4-66-36-0
R16
Yuan Y.
Juvan K.
6-44-1
Liu C.
Rus A.[7]
1-66-33-0
Bouzkova M.[4]
Lys E.
6-1
Bektas E.
Jang S.
6-36-4
Pegula J.[1]
Krueger A.
6-36-1
Birrell K.
Back D.
6-06-1
Kudermetova P.
Von Deichmann K.
6-36-1
Wickmayer Y.
Alexandrova E.[3]
6-37-66
R32
Von Deichmann K.
Khromacheva I.
5-76-43-0
Bektas E.
Pigossi L.
6-756-47-5
Birrell K.
Vickery S.
6-46-4
Kudermetova P.
Parks A.[6]
3-66-16-0
Krueger A.
Podoroska N.
6-26-4
Wickmayer Y.
Liang E.
6-36-4
Lys E.
Schmiedlova A.
6-26-4
Pegula J.[1]
Hruncakova V.
6-26-4
Liu C.
Ku Y.
6-36-3
Rus A.[7]
Han N.
6-16-3
Yuan Y.
Hartono A.
6-16-2
Bouzkova M.[4]
Day K.
6-46-4
Alexandrova E.[3]
Hontama M.
6-36-1
Back D.
Ostapenko J.[2]
3-66-17-64
Juvan K.
Boulter K.[8]
6-46-4
Jang S.
Kenin S.[5]
6-16-4