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 | 54% |
| Houston Astros vs. Chicago White Sox | 49% |
| O/U 9.5 | 45% |
| 1st 5 Innings O/U 5.5 | 44% |
| Spread -1.5 | 39% |
| O/U 10.5 | 39% |
| Spread -1.5 | 35% |
| 1st 5 Innings O/U 6.5 | 34% |
| 1st 5 Innings Spread -1.5 | 32% |
| 1st 5 Innings Spread -1.5 | 28% |
| Spread -2.5 | 28% |
| Spread -2.5 | 26% |
| Extra Innings | 10% |
Market context
Houston and Chicago are scheduled to meet in Chicago, with the Astros coming in at 51-54 and carrying a 4-1 record over their last five games. A crowd-implied **49% YES** suggests the market is treating this as close to a coin flip, which is consistent with a modestly under-.500 Astros team facing a White Sox side that has not been provided with comparable recent form in the available data.[1]
That price also fits a game where short-run form can matter more than season-long record, especially in a single MLB matchup resolved by the final score. On the information available here, the main historical frame is simply that Houston’s recent uptick has narrowed the gap, but not enough to make them a clear favourite. Because the market pays out only on the completed result, any postponement that forces a make-up game extends exposure, while a cancellation or tie would settle 50-50 under the rules given.
For traders, the practical catalysts are late lineup announcements, starting pitcher confirmation, and any injury or rest news close to first pitch. Those details can move a tight pre-game probability more than broad season record, particularly if Houston is missing a regular or if Chicago gets a favourable pitching assignment. The most relevant update to watch is the official game status and starting line-ups as the 2:10pm ET start approaches, because in a market priced near even small changes in availability can matter more than the baseline numbers.[1]
Sources: 1
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $340K.
Methodology
Sports-specific comparison page for Houston Astros vs. Chicago White 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.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- 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.
- 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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