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.
Market context
Shenzhen Leopards host Zhejiang Lions in Game 3 of the CBA semi-final series on 21 May, with Zhejiang leading 2-0 after back-to-back wins, including a 92-85 result in Game 2. That makes the market’s 100% implied YES price look like a settled favourite rather than a balanced contest: it reflects the series state, not a neutral read on one-off game variance. Zhejiang’s recent edge has been built on reliable scoring from Barry Brown, who posted 30 points in the last game, while Shenzhen now need to break a run that has left them behind in the tie.
For context, comparable CBA playoff spots with a team up 2-0 tend to keep the favourite heavily preferred unless there is a late injury, venue issue, or schedule change. The key market point is that resolution depends on the completed final score, including overtime, so a close game can still swing the contract cleanly in either direction. Because settlement is in USDC, the main on-chain angle is not cash-flow risk but timing: if the game is delayed, postponed, or rescheduled, the market remains open until completion, with final resolution only once the official result is posted.
The main catalysts to watch are team announcements, any change to the tip-off schedule, and late injury or availability updates, especially around rotation players and primary ball-handlers. Live score services and official CBA communications are the relevant sources if there is any doubt over whether the game starts on time or is moved. On the crypto side, broader BTC and ETH volatility has little direct bearing on the outcome, though it can affect short-term market participation and liquidity across prediction venues if risk appetite shifts sharply near settlement.
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 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.
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