NBA Summer League: Boston Celtics vs. Charlotte Hornets

Platform comparison

Market context

The Boston Celtics defeated the Charlotte Hornets 89–84 in their NBA Summer League clash on 12 July 2026, a result that now underpins the 100% YES probability for the Celtics winning this prediction market [1]. In prediction markets, a YES share pays out if the stated outcome occurs, while a NO share pays out if it does not; here, the outcome is simply which team wins the game. Because the game has already been played and the Celtics won, the market is effectively settled, with the YES side certain to resolve as “Boston Celtics” [1].

Historically, Summer League games involving established franchises like the Celtics often see their prospects dominate lower-tier or developmental squads, though rosters are fluid and injuries can shift odds quickly. In comparable cases, once a game concludes with a clear winner, prediction markets with a 100% implied probability typically remain static until formal settlement, as no new information can alter the outcome [1]. The 89–84 scoreline, with Anton Watson scoring 15 points for the Celtics, confirms a decisive but not runaway victory, reinforcing the market’s certainty [1].

Traders should monitor official settlement announcements from the platform rather than game-day catalysts, as the event has passed. Key dependencies include confirmation that the result was not overturned due to a rules violation or post-game protest, though such scenarios are rare in Summer League [2]. With the settlement window ending 12 July 2026 at 21:00 UTC and the game already completed, no further announcements, schedule changes, or make-up games will affect resolution [1]. The market will close as “Boston Celtics” unless the platform flags an exceptional cancellation, which is not indicated in current records [2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Market UK, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Market UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.