Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Sport Prediction Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Sport Prediction → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Sport Prediction → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Sport Prediction → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Sport Prediction → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Sport Prediction → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Sport Prediction.
Active sub-markets
| Golden State Valkyries vs. Las Vegas Aces | 0% Golden State Valkyries | 100% Las Vegas Aces |
| Spread -4.5 | 100% Las Vegas Aces | 0% Golden State Valkyries |
| O/U 168.5 | 0% Over | 100% Under |
| Spread -3.5 | 100% Las Vegas Aces | 0% Golden State Valkyries |
| O/U 167.5 | 0% Over | 100% Under |
Market context
The underlying event is a single WNBA matchup on 21 June 2026 between the Golden State Valkyries and the Las Vegas Aces, where the market resolves to the winner based on the final score including overtime. Current crowd-implied probability of 0% for a Valkyries win reflects a stark historical pattern: the Aces have defeated the Valkyries in both of their previous meetings, including a dominant 91–81 victory on 31 May 2026 where A'ja Wilson posted 28 points and 15 rebounds[1][4]. Comparable cases from the 2025 season show the same outcome, with the Aces winning 78–72 in August 2025, reinforcing a consistent two-game losing streak for the Valkyries against this opponent[3].
Traders should monitor pre-game injury reports and lineup confirmations, particularly for Wilson and Jackie Young, whose form directly correlates with the Aces’ dominance in this fixture[1]. The settlement window closes at 20:00 UTC on 21 June 2026, so any postponement will keep the market open until completion, while a full cancellation would resolve 50–50. Recent beat reporting from ESPN highlights the Aces’ 5–3 record and their strong away performance (5–1 away), suggesting minimal volatility unless key absences emerge before the 4:00 PM ET start[1]. No league-wide filler is needed; the catalyst is purely team-specific form and confirmed availability.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $311K.
Methodology
This page reviews Golden State Valkyries vs. Las Vegas Aces across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Sport Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Is this market available outside the US?
- Sport Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What does it cost to trade on Sport Prediction?
- Zero. Sport Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, Sport Prediction triggers a quick verification flow that finishes in minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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