Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
86% | 14% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
86% | 14% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
Market context
The Detroit Tigers face the Baltimore Orioles on 24 May at 1:35 PM ET in a regular-season MLB matchup. The current crowd-implied probability of 73% favours Detroit, suggesting market participants view the Tigers as clear favourites for this fixture. Settlement occurs in USDC upon official MLB confirmation of the final result, with the window closing on 31 May at 17:35 UTC.
Historical matchup data between these franchises shows Detroit has held a slight edge in recent seasons, though Baltimore's competitive standing has improved markedly since 2023. The Orioles finished 2024 with a winning record and made the playoffs, narrowing the perceived gap between the two clubs. At 73% implied probability, the market is pricing in Detroit's home-field advantage and recent form rather than a dominant structural advantage. Comparable MLB fixtures between mid-tier contenders typically settle in the 55–65% range for the favoured team, suggesting this market may be reflecting either strong recent Detroit performance or significant betting volume from Tigers backers.
Traders should monitor starting pitcher announcements, which typically arrive 24–48 hours before game time and materially shift win probabilities. Injury reports for key position players—particularly Detroit's outfield depth and Baltimore's catching situation—warrant attention given their impact on offensive output. Weather conditions at the scheduled venue could influence over-under expectations and thus game flow. On-chain funding rates for sports derivatives have remained relatively stable through May, though whale accumulation patterns on major sportsbooks occasionally precede sharp line movement on prediction markets.
Methodology
This page reads Detroit Tigers vs. Baltimore Orioles on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed for comparison. Every CTA routes to PolyGram, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- 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.
- 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.
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