Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
47% | 53% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
47% | 53% | 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
| Thunder vs. Spurs | 47% YES | 54% NO |
| Team to Score First | 46% YES | 54% NO |
| Odd/Even Score | 44% YES | 56% NO |
| Spread -1.5 | 51% YES | 50% NO |
| O/U 218.5 | 51% YES | 50% NO |
| 1H Spread -1.5 | 54% YES | 47% NO |
Market context
The Oklahoma City Thunder face the San Antonio Spurs on 24 May at 8:00 PM ET in an NBA matchup. The 47% implied probability for a Thunder victory reflects moderate confidence in the visiting team, with settlement occurring at midnight UTC on 25 May. This probability sits notably lower than the Thunder's regular-season win rate, suggesting either Spurs home-court advantage or injury concerns are factoring into trader positioning.
Historical context matters here: the Thunder have won 56 games this season whilst the Spurs secured 22, a 34-game gap that typically translates to roughly 75–80% implied probability in standard sportsbooks. The current 47% reading on Polymarket suggests either significant late-breaking information or structural differences in how prediction markets price playoff-adjacent matchups versus conventional bookmakers. On Kalshi, decimal odds for the same event would display differently, though the underlying probability should converge; Betfair's exchange model allows lay betting that can shift odds in either direction based on order-flow imbalance. Smarkets' smaller liquidity pool may show wider spreads, particularly in the final hours before settlement.
Traders should monitor roster updates through 24 May, particularly any Thunder player absences announced within 24 hours of tipoff. The Spurs' recent form and any coaching adjustments will influence late-market movement. Fee structures vary across platforms—Polymarket charges 2% on winnings, whilst Kalshi's regulatory model and Betfair's commission rates differ materially, affecting net returns on positions held through settlement. Postponement risk, though low in May, would keep this market open per the stated terms.
Methodology
We read Thunder vs. Spurs from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.
Resolution & payout
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.
FAQ
- 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's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram 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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