Match Info

WTA - SINGLES: Seoul - Qualification, hard - Semi-finals

Date: 12 September 2025, Friday


	Hanna Chang		Katie Volynets

	1	2
			Watch
	4.75	1.15
	5	1.18
	5.88	1.11	Watch
	5.05	1.14	Watch
	1.9	1.9
Avarage Now (Initially)	4.52 ↑ (1.9)	1.3 ↓ (1.9)

The best margin for this event is 4.7%, offered by

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Current Win Probability

Hanna Chang
22.3%

Katie Volynets
77.7%

Initial Probability

(when we started the analysis)

50%

Our Initial ML Estimation

51.8%

48.2%

Analysis of Changes in Winning Probabilities:

Hanna Chang has seen a decrease in its chances compared to the initial analysis. (-27.7%)

Note: This is a significant drop in prediction, indicating that Hanna Chang's form might have worsened.

Katie Volynets has improved its chances compared to the initial analysis. (+27.7%)

Note: This is a significant improvement in prediction, suggesting Katie Volynets's recent form is better than expected.

ML Model estimates a higher probability for Hanna Chang than the current prediction. (+29.5%)

Note: The ML model's higher estimate suggests a strong performance forecast for Hanna Chang, possibly due to key factors that the model accounted for.

ML Model estimates a lower probability for Katie Volynets than the current prediction. (-29.5%)

Note: The ML model's lower estimate suggests a potential downturn for Katie Volynets, possibly due to injuries or other negative factors.

Hanna Chang - Katie Volynets Predictions

Expected Score (Market Odds): 0:2

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Preview

Chang is ranked WTA: 243. Volynets is ranked WTA: 105.

Both players are showing inconsistent performances lately.

Chang may face physical challenges compared to their opponent, as they have played more matches in recent days.

In this match, Volynets is seen as the favorite.

In the last 2 head-to-head matches, Chang won 0 matches, drew 0 matches, lost 2 matches, and goals 1:3. (average 0.5:1.5).

Last Results with these Odds

Katie Volynets - the odds 1.9 are the expected chance of winning is 50%, but this team recently wins 63% of matches with these odds.

Form

✺ - easy match; ✺ - difficult match;

- Hanna Chang
ATP Challenger
09.09.25	Veronika Erjavec - Hanna Chang	2:0 ✺
07.09.25	Hanna Chang - Ekaterina Reyngold	2:0 ✺
06.09.25	Hanna Chang - Meiqi Guo	2:1 ✺
02.09.25	Hanna Chang - Jessica Pieri	1:2 ✺
ITF Tournaments
14.08.25	Salma Ewing - Hanna Chang	2:0 ✺
Form Coefficient (based on results and difficulties of last matches) - 5.5 LWWLL
- Katie Volynets
WTA US Open
25.08.25	Katie Volynets - Zeynep Sonmez	0:2 ✺
22.08.25	Katie Volynets - Jana Fett	2:1 ✺
21.08.25	Katie Volynets - Amelia Honer	Honer A. retired ✺
18.08.25	Katie Volynets - Sofia Costoulas	2:0 ✺
WTA Cincinnati
08.08.25	Varvara Gracheva - Katie Volynets	2:1 ✺
Form Coefficient (based on results and difficulties of last matches) - 2.8 LW?WL

Latest Head to Head

WTA Australian Open
10.01.22	Katie Volynets - Hanna Chang	1:0
ITF Tournaments
15.05.21	Katie Volynets - Hanna Chang	2:1

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