Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · Will there be a run scored in the first inning?: Cleveland Guardians vs. Tampa Bay Rays — Yes
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Rules
In the upcoming MLB game between the the named outcome and Tampa Bay Rays, scheduled for October 20 at 8:00PM ET:
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/mlb-cle-tb-2026-10-20AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+26 more outcomes
+19 more outcomes