Justina Mikulskyte vs Antonia Vergara Rivera — Sao Paulo Qualifying Round of 16
Sao Paulo · WTA · Qualifying Round of 16
—
Sets
Saturday, 12 September 2026 ·
hard
Mikulskyte J.vs
Vergara Rivera A.
Win Probability
Pre-match · updated 12:50 UTCMikulskyte J.46%
Vergara Rivera A.54%
Toss-up
50–58%
50–58%
Slight edge
58–67%
58–67%
Clear favourite
67–80%
67–80%
Strong favourite
80%+
80%+
Toss-up · Too close to call
Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.
Common opponents
Last 12 monthsNo common opponents in the last 12 months.
Includes tour-level, 125s, qualifying and team events (⚑). Walkovers excluded. Describes past results in different contexts — not a prediction.
Umpiry Score
Pre-match5.9
Even matchUmpiry Score6.1
Even matchUmpiry ScoreForm & Matchup
5.3+25 Hard Elo edge
Surface ELO4.7Hard Elo 1291
5.1Overall Elo 1357
ELO gap4.9Overall Elo 1351
5.0No prior meetings
H2H5.0No prior meetings
7.38 of last 10 on hard
Surface form6.03 of last 5 on hard
0.0
Win streak0.0
Fatigue & Travel
6.0Clay → Hard
Surface transitionContext
5.0Didn't play here last year
Defending pts5.0Didn't play 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.
43 vs 33 matches
Statistics
This season1st serve in·Slight edge
61%
68%
1st serve points won·Even
60%
58%
2nd serve points won·Even
45%
42%
Service points won·Even
54%
53%
Return points won·Slight edge
46%
51%
Break points saved·Even
51%
54%
Aces / match·Slight edge
1.8
1.0
Double faults / match·Dominant
3.9
2.2
Averages over each player's completed matches in the selected window (43 vs 33). ATP, WTA & Challenger.
Serve vs return
This seasonBaseline 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
Freshness
Recent loadFreshness·
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94
Vergara Rivera A.: 5 days rest · 1 match, 18 games (7d). Higher means fresher. About
Conditions
Court speed
Mediumbalanced pace
SlowFast
Weather forecast
18°CShowers
Wind 9 km/hHumidity 92%
Head to head
No previous meetings on record.