Resolution criteria on PolyGram: In the upcoming MLB game between the Athletics and Baltimore Orioles, scheduled for May 10 at 1:35PM ET: This market will resolve to "Athletics" if the Athletics win the game. This market will resolve to "Baltimore Orioles" if the Baltimore Orioles win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
Market outcomes
| Athletics vs. Baltimore Orioles | 19% YES | 82% NO |
| NRFI | 0% YES | 100% NO |
| O/U 8.5 | 35% YES | 66% NO |
| O/U 5.5 | 50% YES | 50% NO |
| O/U 10.5 | 14% YES | 86% NO |
| Spread -1.5 | 12% YES | 88% NO |
| O/U 9.5 | 21% YES | 79% NO |
| Spread -1.5 | 63% YES | 38% NO |
The Oakland Athletics travel to Baltimore on 10 May for a regular-season MLB matchup against the Orioles, with first pitch scheduled for 1:35 PM ET. The current order book on Polymarket reflects a 45% implied probability for an Athletics victory, suggesting the market views Baltimore as a modest favourite in this fixture.
The Athletics have endured significant roster upheaval in recent seasons, with the franchise in transition following relocation announcements. Baltimore, by contrast, has invested in competitive rosters over the past two years, reaching the playoffs in 2023 and maintaining competitive depth into 2024. Historical matchups between these clubs show the Orioles have held a slight edge in recent years, though individual game outcomes remain volatile and dependent on starting pitcher performance and daily lineup availability. The 45% probability for Oakland reflects reasonable uncertainty rather than a decisive market consensus.
Traders should monitor starting pitcher assignments, which typically become finalised 24–48 hours before game time and materially shift win probabilities. Recent injury reports from both organisations warrant attention, particularly regarding key position players or bullpen availability. Weather conditions at Camden Yards—notably wind direction and temperature—can influence run-scoring environments. The settlement window extends to 17 May 2026, providing ample time for any postponements to be resolved before final settlement against official MLB records.
This market settles from the official outcome published at https://www.mlb.com/. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.
The mechanics for trading "Athletics vs. Baltimore Orioles" are the same as any other PolyGram sporting event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
$475K in lifetime turnover and $316K of resting liquidity puts this market in the top 10% by volume for sports contracts on PolyGram. Order-book depth is exceptional — among the deepest order books in the category.
Last 24 hours alone saw $475K in turnover, well above the lifetime daily-average for this market — a clear sign of news catalysing trader activity right now.
The market has been open for under a month — fresh enough that information asymmetry remains a real factor.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
Resolution is sourced from https://www.mlb.com/. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.
This prediction market is scheduled to close on 17 May 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
Explore more prediction market odds and trading opportunities on PolyGram: