Question 1

What is the current probability for "National Bank Open: Joao Fonseca vs Ben Shelton"?

Accepted Answer

Current Polymarket odds for "National Bank Open: Joao Fonseca vs Ben Shelton": National Bank Open: Joao Fonseca vs Ben Shelton Match O/U 22.5 56%, National Bank Open: Joao Fonseca vs Ben Shelton Match O/U 21.5 54%, National Bank Open: Joao Fonseca vs Ben Shelton Set 2 O/U 8.5 53% (top 3 of 15 outcomes), refreshed continuously.

Question 2

When does this market resolve?

Accepted Answer

This event resolves on 8/17/2026.

Question 3

How is the probability calculated?

Accepted Answer

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.

Question 4

Where can I get this data programmatically?

Accepted Answer

The JSON endpoint is https://api.pdata.world/api/v1/events/polymarket/814099. An MCP server with 9 tools is available at https://api.pdata.world/mcp. Full agent guide: https://pdata.world/agents.md.

National Bank Open: Joao Fonseca vs Ben Shelton

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