Athletics vs. Baltimore Orioles

Platform comparison

Market context

The Oakland Athletics travel to Baltimore on 10 May for a regular-season MLB matchup against the Orioles, with first pitch at 1:35 PM ET. This market settles based on the official final result, with a 50-50 split applying only if the game is cancelled without a rescheduled makeup or ends in a tie—an exceptionally rare outcome in modern baseball. The settlement window extends to 17 May 2026, providing a week beyond the scheduled date to accommodate any postponements.

The 0% implied probability reflects either a technical issue in market initialisation or extremely early pricing before substantive information enters the market. Historical comparison suggests MLB games between non-dominant teams typically trade in the 45-55 range, with home-field advantage worth roughly 3-5 percentage points. The Orioles' recent performance trajectory and roster composition relative to the Athletics' rebuilding phase would normally establish a baseline; however, the current probability suggests the market has not yet incorporated standard baseball fundamentals.

Traders monitoring this market programmatically should track roster announcements, particularly starting pitcher assignments, which typically release 24-48 hours before game time. Weather conditions in Baltimore and any late injury reports could shift implied probabilities meaningfully. The settlement source is specified as official MLB statistics, eliminating ambiguity around resolution, though traders should flag any postponement notices that would extend the settlement window. Conditional order logic should account for the 50-50 tie scenario, though cancellation without makeup remains statistically improbable for a regular-season game.

Methodology

This page reviews Athletics vs. Baltimore Orioles across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Resolution source: This market settles from the official publication at https://www.mlb.com/. A proposer submits the result to the UMA Optimistic Oracle on Polygon, the two-hour challenge window opens, and the smart contract pays out in USDC.

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.

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.