What is the current probability for "Ostapenkov vs Vandecasteele"?

Current Kalshi odds for "Ostapenkov vs Vandecasteele": Quinn Vandecasteele 58%, Daniil Ostapenkov 43% (top 2 of 2 outcomes), refreshed continuously.

When does this market resolve?

This event resolves on Oct 4, 2026.

How is the probability calculated?

pdata reads the latest market prices directly from kalshi's public API and normalizes them to a 0-100 probability scale. See https://pdata.world/methodology for details on per-platform conventions.

Where can I get this data programmatically?

The JSON endpoint is https://api.pdata.world/api/v1/events/kalshi/KXATPCHALLENGERMATCH-26SEP20OSTVAN. An MCP server with 9 tools is available at https://api.pdata.world/mcp. Full agent guide: https://pdata.world/agents.md.

opentrade on Kalshi

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event2 outcomes

Ostapenkov vs Vandecasteele

·Sports·ends Oct 4, 2026

vol cum

$347k

vol 24h

$268.5k

outcomes

ends

Oct 4, 2026

outcomesclick to inspect →

marketselected outcome

Quinn Vandecasteele

rank #1

58¢

▲ 58.0pp

24h change

vol cum

$206.2k

vol 24h

$162.3k

spread

0.01

ends

Oct 4, 2026

If Quinn Vandecasteele wins the Ostapenkov vs Vandecasteele professional tennis match in the 2026 ATP Challenger San Diego 2 Qualification Round 1 after a ball has been played, then the market resolves to Yes.

timeline

opened · Sep 20, 2026opencloses · Oct 4, 2026

Quinn Vandecasteele · prices over time

−24h

now

volume · by outcomehover a column to inspect

no volume history

similar markets

No similar markets for sports & price markets.