Aliona Bolsova vs Elvina Kalieva — San Sebastian 125 Round of 32

San Sebastian 125 · CHALLENGER · Round of 32
Aliona Bolsova
ESP
Aliona Bolsova
#328WTA
1510ELO
1487Clay ELO
28 yrs · 172 cm · Right-handed
Last 10 · pre-match
LWLLWLWLWL
0 — 0
Sets
Monday, 8 September 2025
clay
USA
Elvina Kalieva
#136WTA
1569ELO
1496Clay ELO
22 yrs · Right-handed
Last 10 · pre-match
LWLLLWWLLW
Bolsova A.
7-6 6-3
Kalieva E.
Bolsova A.
7762
Kalieva E.
623–

Aliona Bolsova defeated Elvina Kalieva 7-6 6-3 in the San Sebastian 125 round of 32 on clay. The upset overturned the form book — Elvina Kalieva came in ranked #136.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Bolsova A.serving40% hold

wins 46% of points on serve vs Kalieva E.

Kalieva E.serving42% hold

wins 47% of points on serve vs Bolsova A.

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
Bolsova A.Kalieva E.
1st serve in·Clear edge
74%
57%
1st serve points won·Slight edge
58%
65%
2nd serve points won·Even
43%
46%
Service points won·Even
54%
56%
Return points won·Even
46%
45%
Break points saved·Even
53%
52%
Aces / match·Clear edge
1.1
3.3
Double faults / match·Clear edge
2.7
4.1

Averages over each player's completed matches in the selected window (68 vs 88). ATP, WTA & Challenger.

Clutch

Under pressure
Bolsova A.Kalieva E.
Clutch Rating·Even
18
18
Break points saved·Even
30
28
Break points won·Slight edge
80
87
Deciding sets·Clear edge
20
37
Tiebreaks·Dominant
55
15

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

Umpiry Score

Pre-match
Bolsova A.
5.9
Even matchUmpiry Score
Kalieva E.
6.2
Even matchUmpiry Score
Form & Matchup
4.5Clay Elo 1487
Surface ELO
5.5+9 Clay Elo edge
3.9Overall Elo 1510
ELO gap
6.1Overall Elo 1569
5.0No prior meetings
H2H
5.0
4.8
Surface form
4.7
0.0
Win streak
Fatigue & Travel
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
Bolsova A.Kalieva E.
Freshness·
—
100

Kalieva E.: 18 days rest. Higher means fresher. About

Conditions

Court speed
Medium-slowfavours grinders
SlowFast
Final
Selekhmeteva O.
Koevermans A.
6-06-4
Semi-finals
Selekhmeteva O.
Korpatsch T.
6-26-1
Koevermans A.
Semenistaja D.
7-57-65
Quarter-finals
Korpatsch T.
Rus A.
7-683-66-1
Selekhmeteva O.
Radivojevic L.
7-636-4
Semenistaja D.
Branstine C.
6-46-4
Koevermans A.
Fita Boluda A.
7-56-3
R16
Korpatsch T.
Sherif M.
6-16-2
Radivojevic L.
Todoni A.
W/O
Semenistaja D.
Burillo Escorihuela I.
6-17-5
Fita Boluda A.
Romero Gormaz L.
5-76-26-3
Koevermans A.
Bejlek S.
6-43-66-3
Rus A.
Bolsova A.
6-31-66-4
Branstine C.
Grabher J.
6-16-4
Selekhmeteva O.
Mintegi Del Olmo A.
6-36-4
R32
Rus A.
Vedder E.
6-44-66-0
Todoni A.
Spiteri D.
1-66-36-2
Radivojevic L.
Uebelhoer C.
6-46-3
Selekhmeteva O.
Wurth T.
6-45-76-2
Branstine C.
Bassols Ribera M.
7-645-76-4
Romero Gormaz L.
Esquiva Banuls C.
6-26-0
Fita Boluda A.
Martinez Cirez C.
3-66-27-61
Koevermans A.
Smith T.
6-33-66-3
Sherif M.
Berecoechea N.
6-16-1
Bolsova A.
Kalieva E.
7-626-3
Grabher J.
Cortez Llorca L.
6-16-1
Burillo Escorihuela I.
Naef C.
3-67-636-1
Semenistaja D.
Maristany Zuleta De Reales G.
6-16-2
Bejlek S.
Schunk N.
6-26-1
Korpatsch T.
Cornet A.
6-36-2
Mintegi Del Olmo A.
Von Deichmann K.
6-36-2