What is the current probability for "Naomi Osaka vs Katerina Siniakova: Set 1 Winner"?

Current Kalshi odds for "Naomi Osaka vs Katerina Siniakova: Set 1 Winner": Naomi Osaka 99%, Katerina Siniakova 1% (top 2 of 2 outcomes), refreshed continuously.

When does this market resolve?

This event resolves on Sep 16, 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/KXWTASETWINNER-26SEP02OSASIN-1. An MCP server with 9 tools is available at https://api.pdata.world/mcp. Full agent guide: https://pdata.world/agents.md.

closedtrade on Kalshi

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event2 outcomes

Naomi Osaka vs Katerina Siniakova: Set 1 Winner

·Sports·ends Sep 16, 2026

vol cum

$39.2k

vol 24h

$39k

outcomes

ends

Sep 16, 2026

outcomesclick to inspect →

marketselected outcome

Naomi Osaka

rank #1 · resolved: yes

99¢

▲ 28.0pp

24h change

vol cum

$35.4k

vol 24h

$35.4k

spread

1.00

ends

Sep 16, 2026

If Naomi Osaka wins set 1 in the Naomi Osaka vs Katerina Siniakova professional tennis match in the 2026 US Open Women Singles Round Of 64, then the market resolves to Yes.

timeline

opened · Sep 1, 2026closedresolved · Sep 3, 2026

Naomi Osaka · prices over time

−24h

now

volume · by outcomehover a column to inspect

no volume history

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