Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
0% | 100% | 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
| Portland Fire vs. Indiana Fever | 0% YES | 100% NO |
| Spread -12.5 | 100% YES | 0% NO |
| Spread -9.5 | 100% YES | 0% NO |
| O/U 175.5 | 0% YES | 100% NO |
| O/U 179.5 | 0% YES | 100% NO |
| Spread -13.5 | 100% YES | 0% NO |
Market context
The game has already been played: Indiana Fever beat Portland Fire 90-73 at Gainbridge Fieldhouse on 20 May 2026, so the live sporting outcome is no longer uncertain. That matters for the market’s settlement logic more than the pre-match pricing, because the contract resolves on the completed result unless the fixture is somehow vacated, replayed, or formally ruled non-counting. With crowd-implied probability at 0% YES, the market is already aligned with the published final score and the result feeds directly into on-chain resolution through the normal USDC settlement flow.
Comparable WNBA match markets with heavy favourites usually price close to a near-certain home win, but they can still be distorted by late scratches, travel spots, or a shortened roster. Oddschecker had Indiana around -850 with Portland +13.5 and a total of 180.5, while FanDuel showed the game in its final minutes with Indiana leading 89-73 late in the fourth, consistent with the eventual 90-73 finish. In practice, once a final score is posted by mainstream scoreboards and books have moved off the line, the remaining risk is not the basketball result but the contract’s administrative resolution.
For traders, the key catalysts are any post-game schedule changes, official league confirmation, or dispute over whether the contest is complete under market rules. The settlement window runs to 20 May 2026 23:00 UTC, so the main dependency is whether the event status stays “completed” rather than postponed or cancelled. On-chain, that means the oracle outcome and USDC payout should follow the documented resolution criteria, while wider BTC/ETH moves or funding rates are largely irrelevant unless they are affecting overall liquidity and positioning in the market book.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
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'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.
- 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.
Trade Portland Fire vs. Indiana Fever on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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