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D. Ostapenkov vs Q. Vandecasteele prediction

AI prediction

Probability for members

The model has Q. Vandecasteele winning this match. Create a free account to see with what probability, and the most likely set score.

Predicted winner
Q. Vandecasteele
Probability
Members only
Likely score
Members only
See the probability and scoreFree during the beta

Every prediction is computed before the match and never edited afterwards: the model's real accuracy is published match by match.

Men's ChallengerSioux Fallshard courtTime to be confirmed
D. Ostapenkov
D. Ostapenkov
vs
Q. Vandecasteele
Q. Vandecasteele

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Form and record before the match

Last 10 matches, oldest to most recent

D. Ostapenkov
  1. L
  2. W
  3. L
  4. W
  5. L
  6. W
  7. W
  8. W
  9. L
  10. L
Q. Vandecasteele
  1. L
  2. W
  3. W
  4. L
  5. W
  6. L
  7. L
  8. W
  9. L
  10. L
5 – 5
Wins – losses
4 – 6
11 – 12
Sets won – lost
11 – 14
2 losses
Current streak
2 losses
16-11 (59%)
2026 record
23-22 (51%)
12-8 (60%)
Record on hard court
43-47 (48%)

ATP, WTA and Challenger singles matches played since 2020 by D. Ostapenkov and Q. Vandecasteele, before this match.

Recent matches

D. Ostapenkov's last five matches

Q. Vandecasteele's last five matches

Head-to-head since 2020

D. Ostapenkov leads 2 to 0

Road through the tournament

This is D. Ostapenkov's first match of the tournament. This is Q. Vandecasteele's first match of the tournament. In 2025, the tournament was won by P. Kypson, who beat J. Monday in the final (6-7 7-6 7-5).

Key numbers

In tie-breaks, D. Ostapenkov wins 67 % (10 of 15), Q. Vandecasteele 52 % (17 of 33). In deciding sets, D. Ostapenkov wins 70 % of the time (10 matches), Q. Vandecasteele 39 % (38 matches). After losing the first set, D. Ostapenkov turned 25 % of matches around (12 occasions), Q. Vandecasteele 16 % (58 occasions). After winning the first set, D. Ostapenkov went on to win 82 % of matches, Q. Vandecasteele 80 %.

Completed ATP, WTA and Challenger singles matches since 2020, before this match, retirements and walkovers excluded.

Frequently asked questions about D. Ostapenkov – Q. Vandecasteele

Who is the favourite between D. Ostapenkov and Q. Vandecasteele?
No bookmaker odds are available for this match. Pronocast's model has Q. Vandecasteele winning. The win probability and most likely score are for members before the match.
When is the D. Ostapenkov – Q. Vandecasteele match?
On Sunday, 25 October 2026, at the Sioux Falls tournament (hard court). The time is still to be confirmed.
What is the head-to-head between D. Ostapenkov and Q. Vandecasteele?
Since 2020, D. Ostapenkov leads 2 to 0 in their direct meetings.
Where can I see the prediction for D. Ostapenkov – Q. Vandecasteele?
In the Pronocast app, for members: probability of winning, most likely score and comparison with the odds. It will be published on this page with the result once the match is over.

How the model computes its predictions

Same tournament: Sioux Falls

Tournament page

Other matches on 25 October 2026

All matches on 25 October 2026