Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
79% | 21% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
79% | 21% | 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 | 79% |
| 1st 5 Innings O/U 3.5 | 67% |
| O/U 8.5 | 55% |
| 1st 5 Innings O/U 4.5 | 54% |
| NRFI | 53% |
| Tampa Bay Rays vs. Houston Astros | 51% |
| O/U 9.5 | 45% |
| 1st 5 Innings O/U 5.5 | 43% |
| Spread -1.5 | 39% |
| 1st 5 Innings Spread -1.5 | 32% |
| 1st 5 Innings O/U 6.5 | 31% |
| 1st 5 Innings Spread -1.5 | 30% |
| 1st 5 Innings Spread -2.5 | 19% |
| 1st 5 Innings Spread -2.5 | 18% |
| Extra Innings | 8% |
Market context
The Tampa Bay Rays and Houston Astros face off tonight at Daikin Park in a decisive MLB matchup scheduled for 8:15pm ET, where a Rays victory resolves the market to “Tampa Bay Rays” and an Astros win to “Houston Astros”.
Historical parallels suggest the current 51% crowd-implied probability for the Rays is grounded in their explosive recent form, having won eight of their last nine games to reach 29-27 overall, including a 13-3 rout of the Astros just yesterday where Caminero recorded six RBIs[1]. Comparable cases show that when a team with a winning record like the Rays (51-33) plays the Astros (43-46) after a dominant road win, the momentum often carries, though the Astros have a specific tendency to win six consecutive home games against American League opponents following a home loss, creating a volatile counter-narrative[3].
Traders must monitor the probable starting pitchers, as Rays ace Nick Martinez (2.66 ERA) faces Astros starter Spencer Arrighetti, who has allowed four or more earned runs in four of his last five starts, a critical weakness that could swing the outcome[3][10]. Additionally, watch for Cedric Mullins, who has hit a home run in four of his last five appearances, and the Rays’ streak of winning seven straight games after playing the previous day, a dependency that remains intact tonight[3]. The market will remain open if postponed, but any cancellation or tie resolves 50-50, making the reliability of the night game schedule at Daikin Park a key variable to watch before the first pitch[1].
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $154K.
Methodology
Sports-specific comparison page for Tampa Bay Rays vs. Houston Astros. 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.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- 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.
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