Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
40% | 60% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
40% | 60% | 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 Minnesota Twins travel to Boston on 24 May for a regular-season matchup against the Red Sox, with first pitch scheduled for 1:35 PM Eastern Time. The prediction market currently implies a 39% probability of a Twins victory, suggesting roughly 61% confidence in a Red Sox win. This divergence from even-money odds reflects Boston's home-field advantage and recent form entering late May.
Historical context for late-May AL East contests shows that home teams in this division typically command 52–55% win probability in prediction markets, with sportsbooks pricing similar matchups at -110 to -120 on the favourite. The current 39% Twins probability sits below that baseline, indicating either material concern about Minnesota's roster health or recent performance, or conversely, that prediction-market participants are pricing Boston's home advantage more aggressively than traditional sportsbooks. Cross-platform comparison would clarify whether this represents genuine disagreement or simply different liquidity pools; early-season matchups often show wider divergence between prediction markets and sportsbook lines than games closer to settlement.
Traders should monitor roster updates through 23 May, particularly injury reports affecting either team's starting rotation or key position players. Weather conditions at Fenway Park—notably wind direction and temperature—can materially shift run-scoring expectations in a ballpark with notoriously short dimensions. Recent head-to-head records between these franchises and their respective records in day games versus night games may also influence late-moving probability shifts as settlement approaches on 31 May.
Methodology
We track Minnesota Twins vs. Boston Red Sox on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
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
- Where can I trade this market with the lowest fees?
- On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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 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.
- 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.
Trade Minnesota Twins vs. Boston Red Sox on PolyGram
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