Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
75% | 25% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
75% | 25% | 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 |
|---|---|
| Indiana Fever vs. PortlandFire | 75% |
| O/U 180.5 | 68% |
| O/U 183.5 | 62% |
| O/U 184.5 | 59% |
| Megan DiLeo: Rebounds O/U 3.5 | 58% |
| Carla Leite: Points O/U 14.5 | 56% |
| Caitlin Clark: Rebounds O/U 3.5 | 56% |
| Caitlin Clark: Assists O/U 8.5 | 56% |
| Carla Leite: Assists O/U 5.5 | 55% |
| O/U 185.5 | 55% |
| Megan DiLeo: Points O/U 13.5 | 54% |
| O/U 186.5 | 53% |
| Aliyah Boston: Points O/U 16.5 | 52% |
| Spread -7.5 | 52% |
| Bridget Carleton: Points O/U 12.5 | 51% |
| O/U 187.5 | 50% |
| Megan DiLeo: Points O/U 14.5 | 50% |
| Kelsey Mitchell: Points O/U 22.5 | 49% |
| O/U 188.5 | 48% |
| Spread -8.5 | 47% |
| Aliyah Boston: Points O/U 17.5 | 47% |
| Carla Leite: Points O/U 15.5 | 47% |
| O/U 189.5 | 46% |
| Emily Engstler: Rebounds O/U 5.5 | 45% |
| Bridget Carleton: Rebounds O/U 3.5 | 45% |
| Bridget Carleton: Assists O/U 2.5 | 45% |
| Aliyah Boston: Rebounds O/U 8.5 | 44% |
| Caitlin Clark: Rebounds O/U 4.5 | 44% |
| Caitlin Clark: Assists O/U 9.5 | 44% |
| Aliyah Boston: Assists O/U 3.5 | 42% |
| Carla Leite: Rebounds O/U 2.5 | 39% |
| Caitlin Clark: Points O/U 19.5 | 31% |
| Caitlin Clark: Points O/U 20.5 | 28% |
Market context
Indiana Fever face Portland Fire in a WNBA game scheduled for 31 July at 10:00pm ET, with the market currently implying a 75% chance of an Indiana result. That sits broadly in line with the betting market, where Indiana is listed as a clear moneyline favourite, ranging from around -375 to -500 depending on the book, which implies a win probability well above the market’s current crowd price.[10][12]
The recent head-to-head frame is mixed but still leans Indiana’s way on the balance of the season: the teams split earlier meetings, with Indiana winning 90-73 on 20 May before Portland took the next game 100-84 on 31 May.[3][9] That kind of split is useful for traders because it suggests the matchup is not one-way, even if the market has kept Indiana firmly ahead in subsequent pricing. A 75% YES price is easier to justify if Indiana is confirmed at full strength, because the market is already discounting the possibility of a competitive home-game script rather than a true coin flip.[10][12]
The key trader watchlist is late team news: starting line-up announcements, any rest management after the two sides’ recent schedule load, and whether either team is missing a primary creator or interior defender. The safest catalyst to monitor is the official injury report and beat-reporter pre-game notes in the hours before tip-off, because a late absence can move a WNBA moneyline sharply even when the headline spread looks stable. Current market pricing suggests Indiana’s status, not Portland’s, is the more important dependency for whether this 75% crowd-implied probability looks conservative or fair.[10][12]
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $88K.
Methodology
Sports-specific comparison page for Indiana Fever vs. PortlandFire. 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.
- 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.
- 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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