What is the current probability for "National Bank Open: Sloane Stephens vs Belinda Bencic"?

Current Polymarket odds for "National Bank Open: Sloane Stephens vs Belinda Bencic": National Bank Open: Sloane Stephens vs Belinda Bencic Total Sets: O/U 2.5 50%, National Bank Open: Sloane Stephens vs Belinda Bencic Set 1 O/U 8.5 50%, Completed Match 50% (top 3 of 16 outcomes), refreshed continuously.

When does this market resolve?

This event resolves on 8/13/2026.

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/794270. An MCP server with 9 tools is available at https://api.pdata.world/mcp. Full agent guide: https://pdata.world/agents.md.

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event16 outcomes

National Bank Open: Sloane Stephens vs Belinda Bencic

·Sports·ends Aug 13, 2026

vol cum

$54.8k

vol 24h

$54.7k

outcomes

ends

Aug 13, 2026

outcomesclick to inspect →

showing 5 of 16

TennisSportsGames

marketselected outcome

National Bank Open: Sloane Stephens vs Belinda Bencic Total Sets: O/U 2.5

rank #1

50¢

▲ 26.5pp

24h change

vol cum

$28

vol 24h

$28

spread

1.00

ends

Aug 13, 2026

This market refers to the tennis match between Sloane Stephens and Belinda Bencic in the National Bank Open, originally scheduled for August 6, 2026 at 10:00AM ET. This market will resolve to "Over" if the total number of sets completed equals or exceeds 3. Otherwise, it will resolve to "Under." A super tie breaker is considered as one (1) set for total set markets. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official WTA statistics.

timeline

opened · Aug 4, 2026opencloses · Aug 13, 2026

National Bank Open: Sloane Stephens vs Belinda Bencic Total Sets: O/U 2.5 · prices over time

−24h

now

volume · by outcomehover a column to inspect

no volume history

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