Beijing Ducks vs. Shanghai Sharks

Platform comparison

Market context

Beijing Ducks and Shanghai Sharks are scheduled to play a CBA semi-final game on 22 May, with the market to settle on the team named in the final result after any overtime. The current 0% YES price implies the market is effectively not assigning any chance to a Beijing win, even though recent head-to-head results do not support a zero-conviction view: Shanghai won 99-88 on 17 May and 81-66 on 20 May, while Beijing had won the prior meeting 87-82. In practical terms, that leaves a live playoff series context rather than a one-sided match-up.

For market reading, the main lesson from comparable basketball series is that prices can move sharply on availability news and home-court changes, not just on prior margins. The current setup is also shaped by access and compliance considerations: under Germany’s GlüStV regime, prediction-market-style activity can be treated as gambling exposure rather than a neutral financial product, while US CFTC reach can matter where a platform is deemed to offer event contracts into the US. On access, “no-KYC up to $1,500” generally means small-position trading may be possible with limited identity checks, but it does not remove withdrawal, geolocation, or account-review controls that can still affect whether a user can actually trade this specific market.

Traders should watch for the confirmed tip-off, any postponement or venue change, and official team injury or rotation updates before the game begins, as those are the main drivers of a late repricing. Because the market stays open if the game is delayed and only resolves 50-50 if it is cancelled without a make-up, schedule clarity is the key dependency. A useful recent reference point is the live match listings and score pages from 20-22 May, which show the series was level after the earlier split and the game remained on the calendar for 22 May.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Beijing Ducks vs. Shanghai Sharks across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

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.

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.