Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket UK Pick polygram.ink |
40% | 60% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket UK → |
Polymarket polymarket.com |
40% | 60% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Polymarket UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Polymarket UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Polymarket UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Polymarket UK → |
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 Polymarket UK.
Active sub-markets
| Spread -1.5 | 40% Tampa Bay Rays | 61% Boston Red Sox |
| O/U 7.5 | 48% Over | 53% Under |
| Boston Red Sox vs. Tampa Bay Rays | 42% Boston Red Sox | 59% Tampa Bay Rays |
| NRFI | 47% YES | 54% NO |
| Spread -3.5 | 20% Tampa Bay Rays | 80% Boston Red Sox |
| Spread -2.5 | 29% Tampa Bay Rays | 71% Boston Red Sox |
Market context
The Boston Red Sox travel to Tampa Bay on 10 June for a 1:10 PM ET matchday against the Rays. Polymarket currently prices a Red Sox victory at 40%, reflecting modest confidence in the visiting side despite Boston's stronger historical record in the fixture. The settlement window extends to 17 June at 17:10 UTC, allowing for postponement resolution should weather or scheduling complications arise in Florida's June climate.
Historical matchups between these franchises show Boston holding a slight edge in recent seasons, though Tampa Bay has proven competitive in divisional play. The Rays' home record at Tropicana Field typically favours the host, particularly in early-summer fixtures where their roster depth and bullpen strength become pronounced factors. Red Sox performance metrics from May through early June will carry weight; a team entering the fixture with momentum tends to shift implied probabilities noticeably on Polymarket's USDC/Polygon infrastructure, where conditional token pricing reflects real-time sentiment shifts.
Traders should monitor pitching assignments and injury reports released in the 48 hours preceding the game, as starting pitcher quality materially affects market pricing. Recent roster moves, batting averages against left-handed pitchers, and bullpen availability constitute the primary catalysts. Florida weather forecasts merit attention given June's thunderstorm prevalence; postponement scenarios trigger the market's conditional token mechanics differently than outright outcomes. The current 40% probability suggests the market views this as a competitive matchup with slight Rays advantage, pricing in home-field advantage and recent form data available through standard MLB reporting channels.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket UK, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Where can I trade this market with the lowest fees?
- On Polymarket UK, 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.
- Is this market available outside the US?
- Polymarket UK 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.
- 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket UK 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 Boston Red Sox vs. Tampa Bay Rays on Polymarket UK
Live order book, 0% fees, USDC settlement in seconds.
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