Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
56% | 44% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
56% | 44% | 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
| Odd/Even Score | 56% YES | 44% NO |
| Spurs vs. Timberwolves | 65% YES | 36% NO |
| Team to Score First | 66% YES | 35% NO |
| Spread -4.5 | 50% YES | 51% NO |
| O/U 218.5 | 51% YES | 50% NO |
| 1H Spread -2.5 | 50% YES | 50% NO |
Market context
The San Antonio Spurs face the Minnesota Timberwolves in an NBA matchup on 15 May at 12:00 AM ET. The 56% crowd-implied probability favours the Spurs, reflecting their status as the marginally stronger proposition in this fixture. Settlement occurs immediately after final score confirmation, including any overtime periods.
Historical matchup data between these franchises shows competitive balance over recent seasons, though the Spurs' playoff experience and roster continuity have typically provided a slight edge in neutral-venue scenarios. The current probability sits within the range typical for fixtures between mid-tier playoff contenders, where injury status and recent form shifts can move odds by 5–8 percentage points. Comparable games from the 2024–25 season involving similar win-probability gaps have resolved with roughly 55–60% accuracy for the favoured side, suggesting the market pricing reflects genuine competitive uncertainty rather than lopsided expectation.
Traders should monitor roster announcements through 14 May, particularly regarding player availability and injury confirmations from both camps. Recent team news from ESPN and The Athletic will signal any late-stage changes affecting starting lineups. The timing—a midnight ET start—may influence betting patterns as European traders access the market during their morning hours, potentially affecting liquidity on deposit-heavy platforms. Withdrawal rails including SEPA transfers and USDC settlement will determine how quickly capital flows respond to late-breaking information, with faster on-ramps typically correlating to sharper probability adjustments in the final 6–12 hours before tip-off.
Methodology
We track Spurs vs. Timberwolves on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
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.
- 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.
- 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.
- 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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