Baltimore Orioles vs. Tampa Bay Rays

Platform comparison

Active sub-markets

Market context

Polymarket is pricing this Orioles-Rays contract at 100% YES, so the market is already treating a Baltimore win as fully reflected on-chain. On Polygon, the USDC-settled conditional token can still move if there is late team news or a line-up change, but with crowd-implied probability pinned, any fresh order flow is likely to be thin unless the game is delayed, postponed or otherwise disrupted before final official stats are posted.

That sort of extreme pricing is rare in a straight MLB moneyline market, where even strong favourites usually trade with some residual uncertainty. Recent comparable spots for these clubs have been much closer: FOX Sports listed Tampa Bay at -111 and Baltimore at -108 in a September meeting last year, while other books and prediction sites have alternated between Rays and Orioles edges depending on venue, pitching and lineup availability. The practical read for a Polymarket user is that the contract is not reflecting normal pre-match uncertainty; it is effectively assuming a completed Orioles win with very little room for the settlement mechanics to change the outcome.

The main catalysts to watch are the official starting line-ups, any last-minute pitcher change, and the status of the game itself, because postponement keeps the market open until completion. If weather or scheduling issues force a delay, the settlement logic matters more than the in-game score until a recognised final is recorded. In the absence of a news-driven change, the only meaningful dependency is the official result as recognised by MLB’s final statistics, which is what will determine whether the conditional tokens resolve to Orioles, Rays or a split in the event of a cancellation or tie.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Baltimore Orioles vs. Tampa Bay Rays across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

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.