Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
63% | 37% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
63% | 37% | 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 |
|---|---|
| Golden State Valkyries vs. Washington Mystics | 63% |
| Spread -3.5 | 54% |
| Kiki Iriafen: Points O/U 14.5 | 51% |
| Shakira Austin: Points O/U 11.5 | 51% |
| Spread -4.5 | 51% |
| Shakira Austin: Points O/U 12.5 | 51% |
| Gabby Williams: Points O/U 14.5 | 50% |
| Kiki Iriafen: Rebounds O/U 8.5 | 50% |
| Gabby Williams: Rebounds O/U 3.5 | 50% |
| Gabby Williams: Assists O/U 2.5 | 50% |
| Kiki Iriafen: Assists O/U 1.5 | 50% |
| Veronica Burton: Points O/U 11.5 | 50% |
| Kayla Thornton: Points O/U 8.5 | 50% |
| Shakira Austin: Rebounds O/U 8.5 | 50% |
| Kayla Thornton: Rebounds O/U 4.5 | 50% |
| Veronica Burton: Rebounds O/U 3.5 | 50% |
| Kiki Iriafen: Rebounds O/U 9.5 | 50% |
| Veronica Burton: Points O/U 10.5 | 50% |
| Kiki Iriafen: Points O/U 15.5 | 50% |
| Shakira Austin: Points O/U 13.5 | 50% |
| Sonia Citron: Rebounds O/U 3.5 | 49% |
| Sonia Citron: Assists O/U 3.5 | 49% |
| Spread -5.5 | 48% |
| Veronica Burton: Assists O/U 5.5 | 46% |
| Spread -6.5 | 43% |
| Spread -7.5 | 27% |
| Sonia Citron: Points O/U 15.5 | 26% |
| O/U 154.5 | 20% |
| O/U 156.5 | 16% |
| O/U 155.5 | 16% |
| O/U 157.5 | 14% |
| O/U 158.5 | 11% |
Market context
The underlying real-world event is a WNBA matchup tonight between the Golden State Valkyries and the Washington Mystics at Care Arena, with the market heavily favouring a Valkyries win at 70% implied probability. Golden State arrives fresh off an exhilarating 88-83 victory against Atlanta, marking their fourth consecutive win and bringing their record to 14-7, while Washington improved to 10-9 following an 81-76 triumph over Atlanta, their fifth win in the last seven outings[1]. Historical head-to-head data shows the Valkyries have won all four games played since 2025, including a tight 76-74 expansion franchise victory in May 2025 where Veronica Burton scored 22 points[4][7]. This consistent dominance frames the current 70% probability as a logical reflection of form rather than an outlier, especially given Washington’s defensive reliability that typically keeps games competitive even against potent offenses[1].
Traders should watch for final roster announcements regarding key absences, as both teams have shown resilience but rely heavily on specific performers like Burton, who scored 30 points in the recent 88-83 win over the Mystics[8]. The betting lines favour Washington +4.5, suggesting the market anticipates a narrow contest despite the Valkyries’ winning streak, with the Under 157.5 points aligning with the anticipated slow pace[1]. ESPN’s live spread confirms Golden State as favourites by 4.5 points with a total of 155.5, indicating expectations for a controlled, defensive battle rather than a high-scoring shootout[2]. Any late injury news or coaching adjustments could shift the probability, particularly if Washington’s defensive form falters against Golden State’s potent attack, making pre-game updates critical for accurate positioning.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $147K.
Methodology
Sports-specific comparison page for Golden State Valkyries vs. Washington Mystics. 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.
- 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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