Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| Both Teams to Score | 100% |
| GAIS O/U 0.5 | 100% |
| Halmstads BK O/U 0.5 | 100% |
| Both Teams to Score in Second Half | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| GAIS 2nd Half O/U 0.5 | 100% |
| Halmstads BK 2nd Half O/U 0.5 | 100% |
| GAIS (-1.5) | 0% |
| Halmstads BK (-1.5) | 0% |
| GAIS (-2.5) | 0% |
| Halmstads BK (-2.5) | 0% |
| O/U 2.5 | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| GAIS O/U 1.5 | 0% |
| GAIS O/U 2.5 | 0% |
| Halmstads BK O/U 1.5 | 0% |
| Halmstads BK O/U 2.5 | 0% |
| GAIS 1st Half O/U 0.5 | 0% |
| GAIS 1st Half O/U 1.5 | 0% |
| Halmstads BK 1st Half O/U 0.5 | 0% |
| Halmstads BK 1st Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| GAIS 2nd Half O/U 1.5 | 0% |
| Halmstads BK 2nd Half O/U 1.5 | 0% |
Market context
GAIS and Halmstads BK are meeting in Allsvenskan on 26 July, with the market framed around *more markets* rather than the match result itself. ESPN’s fixture page shows both sides listed before kick-off, with neither club carrying points or form from this specific meeting yet, which is the main reason the crowd price at 0% YES is so hard to justify from pre-match information alone.[1]
Historical reading should be cautious because “more markets” outcomes on a single football match usually hinge on in-play or late team-news triggers rather than long-run table position. With no confirmed edge in the available match listing, the best comparable cases are low-information fixtures where traders wait for starting XIs, weather, or tactical confirmation before pricing ancillary markets such as cards, corners, or first scorer-style props; until those appear, a near-zero crowd probability mainly reflects uncertainty rather than a settled view.[1]
The key catalysts are team-sheet announcements, any late injury or suspension news, and whether either coach rotates heavily so close to the 26 July kick-off. A beat-reporter update would matter most if it names a striker or goalkeeper absence, but in the available sources there is no fresh injury bulletin or selection note to anchor a firmer read, so the next move in pricing should depend on line-up release and any last-minute changes to the matchday squad.[1]
Sources: 1
Methodology
Sports-specific comparison page for GAIS vs. Halmstads BK - More Markets. 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
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- 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.
- 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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