Zeynep Sonmez vs Coco Gauff — US Open Round of 128

US Open · WTA · Round of 128
Zeynep Sonmez
TUR
Zeynep Sonmez
#52WTA
1800ELO
1730Hard ELO
$806kYTD
$2.1MCAREER
24 yrs · 170 cm · Right-handed
Last 10
LWLWLWLWLL
—
Sets
Sunday, 30 August 2026 ·
hard
Coco Gauff
USA4
Coco Gauff
#4WTA
2071ELO
2035Hard ELO
$4.1MYTD
$34MCAREER
22 yrs · 175 cm · Right-handed
Last 10
WWWWWWLWWW
Sonmez Z.
vs
Gauff C.

Zeynep Sonmez faces Coco Gauff in the US Open round of 128 on hard. Coco Gauff holds the paper edge — ranked #4, defending last year's round of 16, a roughly 300-point hard Elo advantage.

Around the match

  • “People come out of the woodwork. You haven't spoken to someone for years. They don't say congrats or happy birthday or nothing. Then they're like, 'Oh, I'm in New York, can I have eight tickets to your match in your box, please?'”

    Gauff C.WTA Tennis ↗

  • “I think over the course of the seven years, I feel like my mom hit a tipping point, because it's been going on since I was 15.”

    Gauff C.WTA Tennis ↗

Quotes belong to their sources, linked above.

Win Probability

Pre-match · updated 12:50 UTC
Sonmez Z.14%
Gauff C.86%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Strong favourite · Gauff C. heavily favoured

Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.

Key context

Common opponents

Last 12 months
14 common opponents · Sonmez Z. 6–13 · Gauff C. 20–5
Gauff C. better · different surfaces (Clay × Grass)▾
Includes tour-level, 125s, qualifying and team events (⚑). Walkovers excluded. Describes past results in different contexts — not a prediction.

Umpiry Score

Pre-match
Sonmez Z.
5.0
Heavy underdogUmpiry Score
Gauff C.
8.2
Dominant favouriteUmpiry Score
Form & Matchup
1.2Hard Elo 1730
Surface ELO
8.8+305 Hard Elo edge
1.6Overall Elo 1800
ELO gap
8.4Overall Elo 2071
5.0No prior meetings
H2H
5.0No prior meetings
4.85 of last 10 on hard
Surface form
9.29 of last 10 on hard
0.0
Win streak
9.06-match win streak
Fatigue & Travel
3-set count
7.01 three-setter in 14 days
Context
6.0Reached the R64 here last year
Defending pts
6.0Reached the last 16 here last year

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.

40 vs 42 matches

Statistics

This season
Sonmez Z.Gauff C.
1st serve in·Even
63%
64%
1st serve points won·Even
63%
67%
2nd serve points won·Slight edge
49%
42%
Service points won·Even
57%
58%
Return points won·Even
45%
47%
Break points saved·Even
55%
54%
Aces / match·Slight edge
1.6
2.5
Double faults / match·Dominant
2.2
6.0

Averages over each player's completed matches in the selected window (40 vs 42). ATP, WTA & Challenger.

Serve vs return

This season
Sonmez Z.serving64% hold

wins 56% of points on serve vs Gauff C.

Gauff C.serving71% hold

wins 59% of points on serve vs Sonmez Z.

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

Clutch

Under pressure
Sonmez Z.Gauff C.
Clutch Rating·Dominant
56
93
Break points saved·Dominant
14
81
Break points won·Slight edge
94
100
Deciding sets·Clear edge
87
99
Tiebreaks·
—
99

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

Freshness

Recent load
Sonmez Z.Gauff C.
Freshness·Clear edge
99
80

Sonmez Z.: 14 days rest · 1 match (14d) · Gauff C.: 5 days rest · 3 matches, 51 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather forecast
26°COvercast
Wind 12 km/hHumidity 79%

Head to head

No previous meetings on record.

Draw