Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
81% | 19% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
81% | 19% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1st 5 Innings O/U 2.5 | 81% |
| 1st 5 Innings O/U 3.5 | 68% |
| O/U 8.5 | 56% |
| 1st 5 Innings O/U 4.5 | 55% |
| NRFI | 52% |
| Tampa Bay Rays vs. Boston Red Sox | 49% |
| O/U 9.5 | 47% |
| 1st 5 Innings O/U 5.5 | 42% |
| Spread -1.5 | 38% |
| 1st 5 Innings O/U 6.5 | 35% |
| 1st 5 Innings Spread -1.5 | 33% |
| 1st 5 Innings Spread -1.5 | 30% |
| 1st 5 Innings Spread -2.5 | 24% |
| 1st 5 Innings Spread -2.5 | 20% |
| Extra Innings | 7% |
Market context
An MLB game between the Tampa Bay Rays and Boston Red Sox kicks off at Fenway Park on 17 July, with the Rays holding a narrow edge in the 49% YES probability. Historically, mid-season matchups where one team sits near .600 and the other lingers around .420 after a five-game skid tend to resolve close to the implied line, as the stronger side’s run differential and home dominance often fail to fully overcome venue-specific pitching volatility. The Rays’ three-game sweep of Boston in mid-June, featuring Drew Rasmussen’s 13-strikeout performance, established a psychological edge, yet Fenway’s short porch and Boston’s recent lineup struggles suggest the margin may tighten, aligning with the near-even crowd probability.
Traders should monitor pre-game starting pitcher announcements, particularly whether Drew Rasmussen or another Rays ace is confirmed, as his absence would significantly shift momentum toward Boston. Key absences in the Rays’ lineup, such as Yandy Díaz, could also alter offensive output, while Boston’s inconsistent pitching staff remains a dependency if they fail to contain Tampa Bay’s run differential. A beat report from Bleacher Report confirms the game is scheduled for 7:10PM ET with no current postponement, but any delay would keep the market open until completion, per settlement rules. Watch for bullpen performance in high-leverage situations during the series, as this often dictates outcomes in tightly contested AL East matchups.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $180K.
Methodology
Sports-specific comparison page for Tampa Bay Rays vs. Boston Red Sox. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
Trade Tampa Bay Rays vs. Boston Red Sox on Sport Prediction
Live order book, 0% fees, USDC settlement in seconds.
Open live market →