Solana Sierra vs Anna BondarWimbledon Round of 128

Wimbledon · WTA · Round of 128
#56WTA
1774ELO
1618Grass ELO
22 yrs · Right-handed
Last 10
LWWLWLWWLW
Sets
Monday, 29 June 2026 ·
grass
#75WTA
1765ELO
1513Grass ELO
29 yrs · 175 cm · Right-handed
Last 10
LLLWLLWWLW
Sierra S.
vs
Bondar A.

Solana Sierra faces Anna Bondar in the Wimbledon round of 128 on grass. Solana Sierra holds the paper edge — ranked #56, defending last year's round of 16, a roughly 100-point grass Elo advantage.

Win Probability

Pre-match · updated 13:20 UTC
Sierra S.63%
Bondar A.37%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Slight edge · Sierra S. narrowly ahead

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

Key context

  • Under pressure: Solana Sierra has the edge on pressure points (Clutch Rating 87 vs Anna Bondar's 52).
  • Fatigue load: Solana Sierra carries the heavier recent load — 2 three-setters to 1 in the past fortnight.
  • Surface form: Solana Sierra 2 of 4, Anna Bondar 1 of 4 on grass recently — Solana Sierra the sharper of late.

Umpiry Score

Pre-match
6.9
Slight advantageUmpiry Score
5.5
Slight disadvantageUmpiry Score
Form & Matchup
6.3+105 Grass Elo edge
Surface ELO
3.7Grass Elo 1513
5.2Overall Elo 1774
ELO gap
4.8Overall Elo 1764
5.0No prior meetings
H2H
5.0No prior meetings
6.67 of last 10 on grass
Surface form
2.02 of last 10 on grass
0.0
Win streak
0.0Lost last 3
Fatigue & Travel
4.02 three-setters in 14 days
3-set count
7.01 three-setter in 14 days
Context
6.0Reached the last 16 here last year
Defending pts
6.0Reached the R128 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.

Form trajectory

Sierra S.Surging
Bondar A.Stable

Direction of recent form — results vs Elo expectation blended with serve/return vs each player's baseline, over the last few months. About

21 vs 23 matches

Statistics

This season
1st serve in·Even
63%
62%
1st serve points won·Even
62%
66%
2nd serve points won·Slight edge
41%
49%
Service points won·Slight edge
54%
59%
Return points won·Even
42%
42%
Break points saved·Slight edge
54%
63%
Aces / match·Clear edge
2.2
4.7
Double faults / match·Dominant
4.5
2.0

Averages over each player's completed matches in the selected window (21 vs 23). ATP, WTA & Challenger.

Serve vs return

This season
Sierra S.serving77% hold

wins 62% of points on serve vs Bondar A.

Bondar A.serving85% hold

wins 66% of points on serve vs Sierra S.

Serve advantage — Bondar A.

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
Clutch Rating·Dominant
87
52
Break points saved·Slight edge
81
88
Break points won·Clear edge
96
77
Deciding sets·Dominant
93
31
Tiebreaks·Clear edge
91
78

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

Freshness

Recent load
Freshness·Clear edge
70
83

Sierra S.: 4 days rest · 3 matches, 78 games (7d) · Bondar A.: 3 days rest · 1 match, 18 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather forecast
18°CPartly cloudy
Wind 9 km/hHumidity 55%

Head to head

No previous meetings on record.

Draw — qualifying

Quarter-finals
Semi-finals
Final