Elsa Jacquemot vs Marta Kostyuk — Australian Open Round of 128

Australian Open · WTA · Round of 128
Elsa Jacquemot
FRA
Elsa Jacquemot
#107WTA
1611ELO
1581Hard ELO
23 yrs · Right-handed
Last 10 · pre-match
LLLWLLLWLL
2 — 1
Sets
Monday, 19 January 2026
hard
Marta Kostyuk
UKR20
Marta Kostyuk
#11WTA
2057ELO
1968Hard ELO
$2.3MYTD
$9.1MCAREER
24 yrs · 175 cm · Right-handed
Last 10 · pre-match
LWWWWWLWWW
Jacquemot E.
6-7 7-6 7-6
Kostyuk M.
Jacquemot E.
6477792
Kostyuk M.
7764671

Elsa Jacquemot defeated Marta Kostyuk 6-7 7-6 7-6 in the Australian Open round of 128 on hard. The upset overturned the form book — Marta Kostyuk came in ranked #11, defending last year's round of 32.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Jacquemot E.serving45% hold

wins 48% of points on serve vs Kostyuk M.

Kostyuk M.serving84% hold

wins 65% of points on serve vs Jacquemot E.

Serve advantage — Kostyuk M.

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

Jacquemot E.Kostyuk M.
9
Serve
53
30
Return
57

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

Statistics

This season
Jacquemot E.Kostyuk M.
1st serve in·Even
64%
60%
1st serve points won·Slight edge
61%
70%
2nd serve points won·Clear edge
34%
48%
Service points won·Slight edge
51%
61%
Return points won·Slight edge
40%
50%
Break points saved·Clear edge
45%
61%
Aces / match·Even
2.8
3.0
Double faults / match·Dominant
7.0
3.9

Averages over each player's completed matches in the selected window (12 vs 20). ATP, WTA & Challenger.

Clutch

Under pressure
Jacquemot E.Kostyuk M.
Clutch Rating·Dominant
33
92
Break points saved·Clear edge
75
93
Break points won·Slight edge
93
98
Deciding sets·Dominant
18
98
Tiebreaks·Dominant
19
85

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

Umpiry Score

Pre-match
Jacquemot E.
5.2
Clear underdogUmpiry Score
Kostyuk M.
8.4
Dominant favouriteUmpiry Score
Form & Matchup
0.5Hard Elo 1581
Surface ELO
9.5+386 Hard Elo edge
0.0Overall Elo 1611
ELO gap
10.0Overall Elo 2057
5.0No prior meetings
H2H
5.0
4.6
Surface form
7.2
0.0Lost last 2
Win streak
7.03-match win streak
Fatigue & Travel
9.3
Minutes 14d
9.0
Prev. match
9.0
Country comfort
5.8
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
Jacquemot E.Kostyuk M.
Freshness·Clear edge
94
73

Jacquemot E.: 6 days rest · 1 match, 15 games (7d) · Kostyuk M.: 4 days rest · 3 matches, 57 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather
31°CPartly cloudy
Wind 5 km/hHumidity 28%

Draw

Final
Rybakina E.[5]
Sabalenka A.[1]
6-44-66-4
Semi-finals
Sabalenka A.[1]
Svitolina E.[12]
6-26-3
Rybakina E.[5]
Pegula J.[6]
6-37-67
Quarter-finals
Svitolina E.[12]
Gauff C.[3]
6-16-2
Pegula J.[6]
Anisimova A.[4]
6-27-61
Rybakina E.[5]
Swiatek I.[2]
7-56-1
Sabalenka A.[1]
Jovic I.[29]
6-36-0
R16
Gauff C.[3]
Muchova K.[19]
6-13-66-3
Anisimova A.[4]
Wang X.
7-646-4
Swiatek I.[2]
Inglis M.
6-06-3
Sabalenka A.[1]
Mboko V.[17]
6-17-61
Svitolina E.[12]
Andreeva M.[8]
6-26-4
Pegula J.[6]
Keys M.[9]
6-36-4
Rybakina E.[5]
Mertens E.[21]
6-16-3
Jovic I.[29]
Putintseva Y.
6-06-1
R32
Gauff C.[3]
Baptiste H.
3-66-06-3
Inglis M.
Osaka N.[16]
W/O
Sabalenka A.[1]
Potapova A.
7-647-67
Rybakina E.[5]
Valentova T.
6-26-3
Wang X.
Noskova L.[13]
7-56-4
Putintseva Y.
Sonmez Z.
6-36-736-3
Andreeva M.[8]
Ruse E.
6-36-4
Muchova K.[19]
Linette M.
6-16-1
Jovic I.[29]
Paolini J.[7]
6-27-63
Mboko V.[17]
Tauson C.[14]
7-655-76-3
Anisimova A.[4]
Stearns P.
6-16-4
Pegula J.[6]
Selekhmeteva O.
6-36-2
Mertens E.[21]
Bartunkova N.
6-06-4
Keys M.[9]
Pliskova K.
6-36-3
Swiatek I.[2]
Kalinskaya A.[31]
6-11-66-1
Svitolina E.[12]
Shnaider D.[23]
7-646-3
R64
Muchova K.[19]
Parks A.
4-66-46-4
Mboko V.[17]
Mcnally C.
6-46-3
Kalinskaya A.[31]
Grabher J.
6-36-3
Linette M.
Li A.
6-36-3
Bartunkova N.
Bencic B.[10]
6-30-66-4
Andreeva M.[8]
Sakkari M.
6-06-4
Stearns P.
Marcinko P.
6-27-5
Tauson C.[14]
Kudermetova P.
6-33-67-5
Jovic I.[29]
Hon P.
6-16-2
Gauff C.[3]
Danilovic O.
6-26-2
Swiatek I.[2]
Bouzkova M.
6-26-3
Osaka N.[16]
Cirstea S.
6-34-66-2
Ruse E.
Tomljanovic A.
6-46-4
Noskova L.[13]
Preston T.
6-24-66-2
Sabalenka A.[1]
Bai Z.
6-36-1
Pegula J.[6]
Kessler M.
6-06-2
Shnaider D.[23]
Gibson T.
3-67-56-3
Valentova T.
Fruhvirtova L.
7-52-66-3
Sonmez Z.
Bondar A.
6-26-4
Svitolina E.[12]
Klimovicova L.
7-56-1
Inglis M.
Siegemund L.
6-46-737-67
Mertens E.[21]
Uchijima M.
6-36-1
Anisimova A.[4]
Siniakova K.
6-16-4
Potapova A.
Raducanu E.[28]
7-636-2
Keys M.[9]
Krueger A.
6-17-5
Paolini J.[7]
Frech M.
6-26-3
Wang X.
Ostapenko J.[24]
4-66-46-4
Rybakina E.[5]
Gracheva V.
7-56-2
Pliskova K.
Tjen J.
6-46-4
Baptiste H.
Hunter S.
6-26-1
Putintseva Y.
Jacquemot E.
6-16-2
Selekhmeteva O.
Badosa P.[25]
6-46-4
R128
Siegemund L.
Samsonova L.[18]
0-67-56-4
Hon P.
Stakusic M.
1-66-45-3
Klimovicova L.
Jones F.
6-23-2
Fruhvirtova L.
Sun L.
6-37-5
Jovic I.[29]
Volynets K.
6-26-3
Jacquemot E.
Kostyuk M.[20]
6-747-647-67
Gracheva V.
Golubic V.
6-12-66-1
Gibson T.
Blinkova A.
6-16-3
Frech M.
Erjavec V.
6-16-1
Kudermetova P.
Maristany Zuleta De Reales G.
6-26-3
Bencic B.[10]
Boulter K.
6-07-5
Muchova K.[19]
Cristian J.
6-37-66
Badosa P.[25]
Diyas Z.
6-26-4
Danilovic O.
Williams V.
6-756-36-4
Pliskova K.
Stephens S.
7-676-2
Andreeva M.[8]
Vekic D.
4-66-36-0
Keys M.[9]
Oliynykova O.
7-666-1
Mcnally C.
Sakatsume H.
6-36-1
Noskova L.[13]
Semenistaja D.
6-36-0
Anisimova A.[4]
Waltert S.
6-36-2
Selekhmeteva O.
Seidel E.
6-33-66-0
Swiatek I.[2]
Yuan Y.
7-656-3
Parks A.
Eala A.
0-66-36-2
Ostapenko J.[24]
Sramkova R.
6-46-4
Rybakina E.[5]
Juvan K.
6-46-3
Sonmez Z.
Alexandrova E.[11]
7-54-66-4
Mboko V.[17]
Jones E.
6-46-1
Potapova A.
Lamens S.
3-67-56-2
Inglis M.
Birrell K.
7-666-796-4
Bondar A.
Mandlik E.
6-06-4
Uchijima M.
Sierra S.
6-36-1
Valentova T.
Joint M.[30]
6-46-4
Tomljanovic A.
Starodubtseva Y.
4-67-636-1
Hunter S.
Bouzas Maneiro J.
6-46-4
Bouzkova M.
Zarazua R.
6-27-5
Gauff C.[3]
Rakhimova K.
6-26-3
Wang X.
Kalinina A.
6-36-3
Putintseva Y.
Haddad Maia B.
3-67-56-3
Tjen J.
Fernandez L.[22]
6-27-61
Sabalenka A.[1]
Rakotomanga Rajaonah T.
6-46-1
Mertens E.[21]
Tararudee L.
7-56-1
Ruse E.
Yastremska D.[26]
6-47-5
Tauson C.[14]
Galfi D.
6-36-3
Li A.
Osorio C.
6-46-757-5
Bai Z.
Pavlyuchenkova A.
6-42-67-610
Sakkari M.
Jeanjean L.
6-46-2
Pegula J.[6]
Zakharova A.
6-26-1
Grabher J.
Cocciaretto E.
7-52-66-4
Baptiste H.
Townsend T.
6-36-736-3
Shnaider D.[23]
Krejcikova B.
2-66-36-3
Stearns P.
Kenin S.[27]
6-36-2
Kalinskaya A.[31]
Kartal S.
7-636-1
Preston T.
Zhang S.
6-32-66-3
Krueger A.
Bejlek S.
6-36-3
Marcinko P.
Maria T.
6-37-5
Svitolina E.[12]
Bucsa C.
6-46-1
Osaka N.[16]
Ruzic A.
6-33-66-4
Linette M.
Navarro E.[15]
3-66-36-3
Kessler M.
Arango E.
6-36-2
Siniakova K.
Udvardy P.
6-16-2
Raducanu E.[28]
Sawangkaew M.
6-46-1
Cirstea S.
Lys E.
3-66-46-3
Bartunkova N.
Kasatkina D.
7-670-66-3
Paolini J.[7]
Sasnovich A.
6-16-2