Madison Sieg vs Antonia Vergara Rivera — W35 Junin Round of 16

W35 Junin · CHALLENGER · Round of 16
USA
Madison Sieg
#397WTA
1237ELO
1207Clay ELO
23 yrs · Right-handed
Last 10 · pre-match
WLLLLWLLWW
2 — 1
Sets
Monday, 30 March 2026
clay
CHI
Antonia Vergara Rivera
#340WTA
1351ELO
1338Clay ELO
19 yrs
Last 10 · pre-match
LWWLLWLWWW
Sieg M.
4-6 6-4 6-4
Vergara Rivera A.
Sieg M.
4662
Vergara Rivera A.
6441

Madison Sieg defeated Antonia Vergara Rivera 4-6 6-4 6-4 in the W35 Junin round of 16 on clay.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Sieg M.serving24% hold

wins 39% of points on serve vs Vergara Rivera A.

Vergara Rivera A.serving36% hold

wins 44% of points on serve vs Sieg M.

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

Statistics

This season
Sieg M.Vergara Rivera A.
1st serve in·Even
66%
67%
1st serve points won·Even
56%
58%
2nd serve points won·Slight edge
46%
40%
Service points won·Even
52%
52%
Return points won·Slight edge
46%
52%
Break points saved·Even
50%
53%
Aces / match·Even
1.0
0.8
Double faults / match·Dominant
4.2
2.2

Averages over each player's completed matches in the selected window (17 vs 23). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Sieg M.
5.7
Slight disadvantageUmpiry ScorePartial · surface data limited
Vergara Rivera A.
6.4
Marginal edgeUmpiry ScorePartial · surface data limited
Form & Matchup
5.0No prior meetings
H2H
5.0
4.0
Surface form
6.3
0.0Lost last 2
Win streak
7.03-match win streak
Fatigue & Travel
7.0
3-set count
7.0
Context
5.0
Defending pts
5.0

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
Sieg M.Vergara Rivera A.
Freshness·
90
—

Sieg M.: 1 day rest · 1 match, 15 games (7d). Higher means fresher. About

Conditions

Court speed
Slowlow bounce, long rallies
SlowFast

Draw

Final
Giovannini L.
Capurro Taborda M.
7-636-2
Giovannini L.
Capurro Taborda M.
6-47-5
Semi-finals
Giovannini L.
Urrutia M.
6-27-5
Capurro Taborda M.
Feistel G.
6-32-66-2
Capurro Taborda M.
Topalova G.
6-22-1
Giovannini L.
Sieg M.
6-24-67-63
Quarter-finals
Capurro Taborda M.
Alves C.
6-44-66-2
Feistel G.
Bosio V.
1-66-26-1
Urrutia M.
Fullana L.
6-26-4
Giovannini L.
Reasco Gonzalez M.
6-46-4
Sieg M.
Urrutia M.
6-767-646-0
Topalova G.
Bosio V.
4-66-36-4
Giovannini L.
Rodriguez V.
6-26-3
Capurro Taborda M.
Markus C.
6-46-1
R16
Giovannini L.
Bruno V.
6-16-2
Feistel G.
Brown J.
6-16-3
Reasco Gonzalez M.
Korpanec Davies A.
6-726-36-2
Alves C.
Navarro M.
6-06-0
Fullana L.
Rodriguez V.
6-16-3
Capurro Taborda M.
Barrera Aguirre I.
6-46-2
Urrutia M.
Rogers A.
6-41-66-4
Bosio V.
Cinalli L.
6-46-2
Topalova G.
Cinalli L.
6-36-0
Sieg M.
Vergara Rivera A.
4-66-46-4
Markus C.
Barros V.
3-67-56-1
Capurro Taborda M.
Romero C.
6-16-2
Bosio V.
Feistel G.
6-41-66-1
Urrutia M.
Rogers A.
6-46-1
Rodriguez V.
Podoroska N.
6-34-66-4
Giovannini L.
Konishi Camargo Silva J.
6-16-4
R32
Navarro M.
Cristobal M.
6-16-0
Feistel G.
Topalova G.
7-56-3
Rodriguez V.
Giaccio J.
6-26-3
Cinalli L.
Maruca M.
6-06-3
Bosio V.
Gobbi Monllau A.
6-16-0
Giovannini L.
Markus C.
6-26-4
Fullana L.
Sieg M.
6-33-66-1
Capurro Taborda M.
Mdlulwa W.
6-06-2
Korpanec Davies A.
Gonzalez Daniele J.
1-66-47-62
Urrutia M.
Candiotto A.
6-46-3
Barrera Aguirre I.
Bonardi B.
2-67-637-65
Brown J.
Pereira R.
6-46-1
Reasco Gonzalez M.
Duarte A.
6-06-0
Bruno V.
Rabin S.
7-52-66-2
Rogers A.
Corbalan Miranda A.
6-26-1
Alves C.
Bulbarella M.
6-16-0
Cinalli L.
Candiotto A.
6-26-3
Romero C.
Navarro M.
6-36-2
Sieg M.
Markus C.
6-16-1
Markus C.
Alves C.
7-656-4
Urrutia M.
Bonardi B.
6-46-4
Barros V.
Gonzalez Daniele J.
6-16-4
Rogers A.
Zornada E.
6-46-0
Feistel G.
Korpanec Davies A.
6-06-3
Rodriguez V.
Souza M.
6-36-4
Konishi Camargo Silva J.
Mdlulwa W.
6-26-3
Vergara Rivera A.
Barrera Aguirre I.
6-26-3
Podoroska N.
Ayala L.
6-46-2
Capurro Taborda M.
Reasco Gonzalez M.
6-46-4
Giovannini L.
Larraya Guidi S.
6-16-3
Bosio V.
Moyano L.
7-56-4
Topalova G.
Fullana L.
6-36-0