Aryna Sabalenka has struggled to find her footing, holding a career baseline win percentage around 56% on hard courts while currently trending downward. Her recent performances have been a mixed bag, with a 2-year trajectory that shows signs of decline, revealing a gap from her peak Elo rating. The former top player will need to tap into her aggressive serve and powerful groundstrokes to regain her edge on grass.
Sabalenka's recent outings tell a stark story. After two wins in Berlin, she faltered against Jessica Pegula, leaving her with two wins and three losses in her last five matches. With no recent history to draw confidence from, her upcoming challenge against Tamara Kostovic will be a test of both her mental strength and ability to adapt under pressure.
Match results: A. Sabalenka
20 Jun 2026WTA Berlin
A. Sabalenka
J. Pegula
02
46
06
L
19 Jun 2026WTA Berlin
A. Sabalenka
N. Bartunkova
21
26
64
W
17 Jun 2026WTA Berlin
A. Sabalenka
E. Alexandrova
20
64
64
W
3 Jun 2026WTA French Open
A. Sabalenka
D. Shnaider
12
63
57
06
L
1 Jun 2026WTA French Open
A. Sabalenka
N. Osaka
20
75
63
W
30 May 2026WTA French Open
A. Sabalenka
D. Kasatkina
20
60
75
W
28 May 2026WTA French Open
A. Sabalenka
E. Jacquemot
20
75
62
W
26 May 2026WTA French Open
A. Sabalenka
J. Bouzas Maneiro
20
64
62
W
9 May 2026WTA Rome
A. Sabalenka
S. Cirstea
12
62
36
57
L
7 May 2026WTA Rome
A. Sabalenka
B. Krejcikova
20
62
63
W
T. Kostovic
Player Overview
Tamara Kostovic is making strides, her recent form showing a sharp contrast to her earlier performances. With a career baseline win percentage that suggests potential, she has exhibited a rising trajectory over the last two years. Kostovic’s ability to deliver consistent serves and solid baseline play has begun to define her game, especially on grass where she thrives.
The young player arrives at this match with a strong record from Wimbledon, having won her last three matches, including a recent victory over L. Zhu. However, her previous losses in lower-tier events raise questions about her consistency against higher-ranked opponents. Facing Aryna Sabalenka will be a pivotal moment in her career, where she must prove she can compete at this level.
Match results: T. Kostovic
25 Jun 2026WTA Wimbledon
T. Kostovic
L. Zhu
20
63
64
W
24 Jun 2026WTA Wimbledon
R. Sramkova
T. Kostovic
12
64
46
W
23 Jun 2026WTA Wimbledon
Y. Ku
T. Kostovic
02
16
46
W
9 Jun 2026W100 Zagreb (Croatia)
I. Oz
T. Kostovic
21
75
46
63
L
2 Jun 2026Makarska
S. Waltert
T. Kostovic
20
60
63
L
29 May 2026W75 Kursumlijska Banja
T. Kostovic
L. Samson
02
06
46
L
28 May 2026W75 Kursumlijska Banja
T. Kostovic
J. Struplova
20
62
61
W
27 May 2026W75 Kursumlijska Banja
T. Kostovic
Y. Kotliar
10
62
W
20 May 2026WTA French Open
T. Kostovic
K. Quevedo
12
63
26
L
19 May 2026WTA French Open
T. Kostovic
E. Mandlik
20
62
62
W
Players Analysis
A. Sabalenka has shown a strong performance in her recent matches, winning 6 out of her last 10 matches, including a notable victory against N. Bartunkova. However, she faced a setback in her last match against J. Pegula, losing in straight sets. On the other hand, T. Kostovic has been in impressive form, winning 8 out of her last 10 matches, including a recent victory in the WTA Wimbledon final against L. Zhu. Kostovic's recent success indicates a high level of confidence and form heading into this match.
Statistical Analysis & Influencing Factors
In terms of overall performance, A. Sabalenka has scored an average of 1.6 sets per match in her last 10, while T. Kostovic has averaged 1.3 sets per match. Sabalenka's recent matches have seen her struggle with consistency, particularly in her last match where she failed to win a set. Kostovic, conversely, has been more reliable, especially in high-pressure situations, which could play a crucial role in their upcoming encounter. The match will be played on grass, a surface that favors Kostovic's playing style, further enhancing her chances of success.
A. Sabalenka — T. Kostovic Prediction
Given the current form and recent performances of both players, T. Kostovic is slightly favored to win this match. Kostovic's recent victories and overall consistency provide her with an edge over Sabalenka, who has been struggling to find her rhythm. The prediction is for a competitive match, but Kostovic's form suggests she will likely take the win.
Final score in sets: 2:0
Predicted winner of each set: Set 1 - T. Kostovic, Set 2 - T. Kostovic
Expected aces: 5
Double faults: 2
Break points: 4
In terms of tactical expectations, T. Kostovic is likely to focus on aggressive baseline play, utilizing her strong serve to gain an advantage early in the points. A. Sabalenka may need to adjust her strategy to counter Kostovic's aggressive style, possibly looking to extend rallies and exploit any weaknesses in Kostovic's movement.
3 Reasons Why T. Kostovic Will Win
Projected Sets Edge. The numeric forecast favors T. Kostovic 2:0 in sets, reflecting a confident path to the win.
Match Context Edge. A combination of form, experience and tournament context favors T. Kostovic.
Pressure Points. In recent matches, T. Kostovic has looked slightly sharper in deciding games and late-set scenarios than A. Sabalenka, which can swing tight scorelines.
Match Prediction
DateMatchWSADFBP
29.06.2026 16:30WTA Wimbledon
A. Sabalenka
T. Kostovic
02
0011
35
21
24
Where to watch A. Sabalenka vs T. Kostovic
WTA Official Website - Visit the official WTA website for match schedules, results, and broadcast information.
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Tennis Channel - Find out about live broadcasts and streaming options on Tennis Channel.
BBC Sport - Tennis - BBC Sport provides coverage and updates on tennis matches, including Wimbledon.
Wimbledon Official Website - The official Wimbledon website for live updates, match schedules, and broadcast information.
