Match Info

CHALLENGER WOMEN - SINGLES: San Sebastian, clay - 1/16-finals

Date: 9 September 2025, Tuesday


	Aliona Bolsova Zadoinov		Elvina Kalieva

	1	2
	1.5	2.5	Watch
	1.5	2.45
	1.5	2.42	Watch
	1.55	2.49
	1.48	2.51	Watch
	1.53	2.55	Watch
Avarage Now (Initially)	1.51 ↓ (1.8)	2.49 ↑ (1.91)

The best margin for this event is 4.6%, offered by

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Current Win Probability

Aliona Bolsova Zadoinov
62.2%

Elvina Kalieva
37.8%

Initial Probability

(when we started the analysis)

51.5%

48.5%

Our Initial ML Estimation

52.5%

47.5%

Analysis of Changes in Winning Probabilities:

Aliona Bolsova Zadoinov has improved its chances compared to the initial analysis. (+10.7%)

Note: This is a significant improvement in prediction, suggesting increased confidence in Aliona Bolsova Zadoinov's performance.

Elvina Kalieva has seen a decrease in its chances compared to the initial analysis. (-10.7%)

Note: This is a significant drop in prediction, and Elvina Kalieva might be facing challenges that affect their performance.

ML Model estimates a lower probability for Aliona Bolsova Zadoinov than the current prediction. (-9.7%)

Note: The ML model's lower estimate suggests that there may be underlying issues with Aliona Bolsova Zadoinov that the model has picked up on.

ML Model estimates a higher probability for Elvina Kalieva than the current prediction. (+9.7%)

Note: The ML model's higher estimate suggests that Elvina Kalieva could outperform expectations, possibly based on recent matchups or player stats.

Who will win by Users?

1	X	2
100%	0%	0%

Aliona Bolsova Zadoinov - Elvina Kalieva Predictions

Verified Performance Core (Selected Experts): 2 Selected Experts predict this event. Bolsova Zadoinov (votes: 2 - 100%).

Expected Score (Market Odds): 2:0

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Preview

Bolsova Zadoinov is ranked WTA: 257. Kalieva is ranked WTA: 253.

The recent form of both competitors has been shaky.

The probability of winning is almost the same for both players in this match.

In the last 1 head-to-head match, Bolsova Zadoinov won 0 matches, drew 0 matches, lost 1 match, and goals 0:0.

Form

✺ - easy match; ✺ - difficult match;

- Aliona Bolsova Zadoinov
ATP Challenger
02.09.25	Andrea Lazaro Garcia - Aliona Bolsova Zadoinov	2:0 ✺
01.09.25	Aliona Bolsova Zadoinov - Dalila Spiteri	2:0 ✺
ITF Tournaments
13.08.25	Aliona Bolsova Zadoinov - Teodora Kostovic	1:2 ✺
01.08.25	Arantxa Rus - Aliona Bolsova Zadoinov	2:0 ✺
31.07.25	Momoko Kobori - Aliona Bolsova Zadoinov	0:2 ✺
Form Coefficient (based on results and difficulties of last matches) - 3.7 LWLLW
- Elvina Kalieva
ITF Tournaments
04.09.25	Caijsa Wilda Hennemann - Elvina Kalieva	2:1 ✺
03.09.25	Demi Tran - Elvina Kalieva	0:2 ✺
WTA Monterrey
17.08.25	Leolia Jeanjean - Elvina Kalieva	2:0 ✺
16.08.25	Nicole Fossa Huergo - Elvina Kalieva	0:2 ✺
ITF Tournaments
08.08.25	Elvina Kalieva - Jessika Ponchet	0:2 ✺
Form Coefficient (based on results and difficulties of last matches) - 2.5 LWLWL

Latest Head to Head

ATP Challenger
28.11.23	Elvina Kalieva - Aliona Bolsova Zadoinov	Canceled

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