Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
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 PolyGram.
Active sub-markets
| Connecticut Sun vs. Seattle Storm | 100% YES | 0% NO |
| Spread -2.5 | 0% YES | 100% NO |
| O/U 165.5 | 0% YES | 100% NO |
| O/U 167.5 | 0% YES | 100% NO |
| O/U 168.5 | 0% YES | 100% NO |
| Spread -1.5 | 0% YES | 100% NO |
Market context
Connecticut are due to play Seattle in a WNBA regular-season game at Climate Pledge Arena, with the market closing at the scheduled tip and any postponement keeping it live until completion. For a programmatic trader, the first check is whether the event state has actually advanced from scheduled to in-progress, then whether the settlement clock is still inside the window and whether a make-up date has been posted, because cancellation and rescheduling can change the resolution path. With the crowd already at 100% YES, the useful question is not directional conviction but whether there is any operational reason the contract could still settle away from the expected winner.
Comparable cases in this fixture have leaned on recent head-to-head form and roster availability. Seattle beat Connecticut 89-82 on 10 May, and that result is the most relevant analogue for models that weight short-run matchup data more heavily than season-long priors. ESPN’s pregame note on 20 May highlighted Connecticut’s five-game skid and Seattle’s stronger recent form, which helps explain why a market can sit at a near-certain price even before line-ups are finalised. In a copy-trading or conditional-order workflow, that sort of setup typically means the entry signal is driven less by raw probability and more by whether the market is already fully saturated.
The main catalysts are late injury confirmations and any pre-tip changes to team status. Seattle had been managing absences for Ezi Magbegor and Katie Lou Samuelson, while Connecticut’s rotation health remained a key variable in the previewed matchup. Traders running bots would normally watch official WNBA injury reports, beat-writer updates, and arena start-time confirmations, then compare them with the market’s open interest and liquidity. If the game tips as scheduled, those inputs matter far more for price discovery before lock than for settlement afterwards.
Methodology
This page reviews Connecticut Sun vs. Seattle Storm 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 PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- Where can I trade this market with the lowest fees?
- On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- PolyGram 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.
- What does it cost to trade on PolyGram?
- Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within 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.
Trade Connecticut Sun vs. Seattle Storm on PolyGram
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