Beijing Ducks vs. Shanghai Sharks

Platform comparison

Market context

Beijing Ducks and Shanghai Sharks meet in Game 3 of their CBA semi-final series on 22 May, with the series level after the first two games. The match result, including overtime, is the only trigger for settlement here; if the fixture is delayed, the market stays open until a completed game, while a full cancellation would resolve 50-50. In practice, a zero-cent YES price implies the market has either not loaded meaningful order flow or is still treating the fixture as too far from a clean settle event, despite the game being scheduled and already reflected on live scoreboards.

Comparable CBA playoff spots have shown that short series swings can be abrupt: Shanghai beat Beijing 81-66 in Game 2 after Beijing had taken an earlier game, so the immediate form point is not one-sided. Head-to-head results this season have also been mixed, with both clubs taking wins at different stages, which supports a closer reading than the current 0% YES suggests. For prediction markets settled in USDC, the key point is that the contract only needs a final official winner; there is no extra dependency on margins, quarters, or overtime splits. That makes the market sensitive to late changes in scheduling, rather than to in-game volatility once tip-off arrives.

The main catalysts are straightforward: any CBA postponement notice, venue change, or official league statement on rescheduling would keep the market open, while confirmation that the game starts as planned narrows the path to settlement. Traders also watch whether the series context shifts after the latest result, since playoff momentum can affect both the on-court price and any linked crypto liquidity if broader BTC/ETH risk appetite is weak. Where relevant, exchange pricing and funding rates can shape how aggressively market makers quote event contracts, but the actual outcome still comes down to the final scoreboard published by the league.

Sources: 1 · 2 · 3 · 4 · 5

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.

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.

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.