What is the current probability for "Cincinnati Open: Christopher O'Connell vs Kamil Majchrzak"?

The contested Polymarket outcomes for "Cincinnati Open: Christopher O'Connell vs Kamil Majchrzak" are Cincinnati Open: Christopher O'Connell vs Kamil Majchrzak 68%, Cincinnati Open: Christopher O'Connell vs Kamil Majchrzak Match O/U 23.5 55%, Cincinnati Open: Christopher O'Connell vs Kamil Majchrzak Set Handicap +/-1.5 50% — 3 of 16 outcomes are already 95%+. Refreshed continuously.

When does this market resolve?

This event resolves on 8/21/2026.

How is the probability calculated?

pdata reads the latest market prices directly from polymarket'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/polymarket/845971. An MCP server with 9 tools is available at https://api.pdata.world/mcp. Full agent guide: https://pdata.world/agents.md.

opentrade on Polymarket

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event16 outcomes

Cincinnati Open: Christopher O'Connell vs Kamil Majchrzak

·Sports·ends Aug 21, 2026

vol cum

$70.5k

vol 24h

$70.6k

outcomes

ends

Aug 21, 2026

outcomesclick to inspect →

showing 5 of 16

TennisSportsGames

marketselected outcome

Cincinnati Open: Christopher O'Connell vs Kamil Majchrzak Set 1 Winner

rank #1

100¢

· 0.0pp

24h change

vol cum

$2.6k

vol 24h

$2.6k

spread

0.00

ends

Aug 21, 2026

This market refers to the tennis match between Christopher O'Connell and Kamil Majchrzak in the Cincinnati Open, originally scheduled for August 14, 2026 at 2:00PM ET. This market will resolve to “O'Connell” if Christopher O'Connell wins the first set. It will resolve to “Majchrzak” if Kamil Majchrzak wins the first set. If the match begins but is not completed, and the first set is concluded with a winner determined, this market will resolve based on that completed set. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled (not played at all) or is delayed beyond 7 days from the scheduled date without play beginning, this market will resolve 50-50. Resolution will be based on official ATP match statistics.

timeline

opened · Aug 13, 2026opencloses · Aug 21, 2026

Cincinnati Open: Christopher O'Connell vs Kamil Majchrzak Set 1 Winner · prices over time

−24h

now

volume · by outcomehover a column to inspect

no volume history

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