Baltimore Orioles vs. Tampa Bay Rays

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Active sub-markets

Market context

The Orioles and Rays are scheduled to meet today at 1:10pm ET, with the market currently pinned at a 100% crowd-implied probability in favour of a Baltimore win. That reading reflects how certainty can build around a listed game once line-ups, venue and start time are effectively locked in, but it still leaves room for late changes that are material in MLB: a scratch from the starting pitcher, an unexpected rest day for a core bat, or a postponement that shifts the contest into a make-up slot.

Recent meetings between these clubs have been competitive rather than one-sided. Baltimore took a 5-1 win in Tampa on 17 June 2025, with Dean Kremer covering five innings and the bullpen finishing the job, while the teams were also on ESPN’s schedule for later in 2026, underlining that this pairing has tended to draw regular division interest. In markets like this, a very high price usually reflects confidence in one side’s line-up and run environment, but MLB outcomes remain sensitive to late innings and pitching changes rather than name value alone.

The main catalysts to watch are the confirmed starting pitchers, any injury or rest updates before first pitch, and whether the game keeps its 1:10pm ET slot without weather disruption. If Baltimore or Tampa Bay make a same-day roster move, or if a postponement forces a reschedule, the market dynamics can change quickly. The primary settlement source is the official final statistics for the game, so any delay in completion, extra-innings result, or no-contest scenario would matter more than pre-game pricing.

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Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.