Match Info

CHALLENGER MEN - SINGLES: San Diego 2 - Qualification, hard - Semi-finals

Date: 20 September 2026, Sunday


	Daniil Ostapenkov		Quinn Vandecasteele

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Daniil Ostapenkov
31.2%

Quinn Vandecasteele
68.8%

(when we started the analysis)

36.3%

63.7%

36.1%

63.9%

Daniil Ostapenkov has seen a decrease in its chances compared to the initial analysis. (-5.1%)

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

Quinn Vandecasteele has improved its chances compared to the initial analysis. (+5.1%)

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

ML Model estimates a higher probability for Daniil Ostapenkov than the current prediction. (+4.9%)

ML Model estimates a lower probability for Quinn Vandecasteele than the current prediction. (-4.9%)

Expected Score (Market Odds): 0:2

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Ostapenkov is ranked ATP: 554., and Vandecasteele is ranked ATP: 468..

The recent form of both competitors has been marked by mixed results.

A closely fought contest is anticipated, with Vandecasteele holding a narrow advantage.

These two players have no recorded direct encounters in recent history.

✺ - easy match; ✺ - difficult match;

- Daniil Ostapenkov
ATP Challenger
14.09.26	Timo Legout - Daniil Ostapenkov	2:0 ✺
13.09.26	Gus Grumet - Daniil Ostapenkov	0:2 ✺
09.08.26	Daniil Ostapenkov - Egor Agafonov	Ostapenkov D. Retired ✺
05.08.26	Daniil Ostapenkov - Florent Bax	1:2 ✺
04.08.26	Constantin Bittoun Kouzmine - Daniil Ostapenkov	1:2 ✺
Form Coefficient (based on results and difficulties of last matches) - 4 LW?LW
- Quinn Vandecasteele
ATP Challenger
14.09.26	Quinn Vandecasteele - Bryce Nakashima	0:2 ✺
13.09.26	Quinn Vandecasteele - Noah Zamora	2:0 ✺
ATP Winston-Salem
24.08.26	Quinn Vandecasteele - James Duckworth	0:2 ✺
23.08.26	Pierre-Hugues Herbert - Quinn Vandecasteele	1:2 ✺
22.08.26	Li Tu - Quinn Vandecasteele	0:2 ✺
Form Coefficient (based on results and difficulties of last matches) - 9.4 LWLWW

Daniil Ostapenkov - Quinn Vandecasteele: Predictions, Live Scores & TV Guide