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Boston Red Sox vs. Tampa Bay Rays

Five-platform snapshot of "Boston Red Sox vs. Tampa Bay Rays" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

40% YES 60% NO Volume: $183K Liquidity: $727K Closes: 17 Jun 2026
Trade on Polymarket UK →
Boston Red Sox vs. Tampa Bay Rays

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
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 -1.540% Tampa Bay Rays61% Boston Red Sox
O/U 7.548% Over53% Under
Boston Red Sox vs. Tampa Bay Rays42% Boston Red Sox59% Tampa Bay Rays
NRFI47% YES54% NO
Spread -3.520% Tampa Bay Rays80% Boston Red Sox
Spread -2.529% Tampa Bay Rays71% 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.
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