Tereza Valentova vs Elise MertensOsaka Round of 16

Osaka · WTA · Round of 16
#54WTA
1818ELO
1797Hard ELO
$549kYTD
$1.0MCAREER
19 yrs
Last 10 · pre-match
LLWWLLLWWW
2 — 0
Sets
Monday, 13 October 2025
hard
#27WTA
1894ELO
1847Hard ELO
$1.6MYTD
$19MCAREER
30 yrs · 179 cm · Right-handed
Last 10 · pre-match
LWWWWLWLWL
Valentova T.
6-4 6-1
Mertens E.
Valentova T.
662
Mertens E.
410

Tereza Valentova defeated Elise Mertens 6-4 6-1 in the Osaka round of 16 on hard. The upset overturned the form book — Elise Mertens came in ranked #27, defending last year's round of 16.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Valentova T.serving73% hold

wins 60% of points on serve vs Mertens E.

Mertens E.serving73% hold

wins 60% of points on serve vs Valentova T.

Even serve battle

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

Valentova T.Mertens E.
36
Serve
51
56
Return
54

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

Statistics

This season
1st serve in·Even
62%
58%
1st serve points won·Even
67%
70%
2nd serve points won·Even
48%
48%
Service points won·Even
59%
61%
Return points won·Even
47%
45%
Break points saved·Even
60%
60%
Aces / match·Clear edge
3.1
4.6
Double faults / match·Clear edge
3.0
3.9

Averages over each player's completed matches in the selected window (72 vs 68). ATP, WTA & Challenger.

Umpiry Score

Pre-match
6.6
Marginal edgeUmpiry Score
4.6
Heavy underdogUmpiry Score
  • Recent retirement (−1.5)
Form & Matchup
4.5Hard Elo 1797
Surface ELO
5.5+51 Hard Elo edge
4.3Overall Elo 1818
ELO gap
5.7Overall Elo 1894
5.0No prior meetings
H2H
5.0
7.9
Surface form
3.9
0.0
Win streak
0.0
Fatigue & Travel
Minutes 14d
8.9
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
Freshness·Clear edge
98
74

Valentova T.: 11 days rest · 1 match (14d) · Mertens E.: 3 days rest · 3 matches, 61 games (7d). Higher means fresher. About

Conditions

Court speed
Fastbig serves, short points
SlowFast