NBA Summer League: Boston Celtics vs. Charlotte Hornets

Platform comparison

Market context

The Boston Celtics have already defeated the Charlotte Hornets 89–84 in the NBA Summer League game scheduled for 12 July in Las Vegas, with Anton Watson scoring 15 points for the visitors [1]. The contest, played at 5:00pm ET on ESPN2, concluded with the Celtics improving to 1–0 while the Hornets sit at 1–1 [2][7]. Because the game has been completed and the final score is confirmed, the prediction market titled “NBA Summer League: Boston Celtics vs. Charlotte Hornets” must resolve to “Boston Celtics”, matching the 100% YES crowd-implied probability.

Historically, Summer League outcomes rarely trigger 50–55% splits on prediction markets once the game is played; instead, they settle decisively on the official result, as seen in prior Las Vegas fixtures where postponed games were either replayed or resolved quickly without prolonged uncertainty [1][9]. In cases where a game is cancelled entirely with no make-up, markets default to 50–50, but that contingency does not apply here since the match was played and finished. The divergence between sportsbook lines (which often close before Summer League games) and prediction-market odds is minimal post-result, as both align with the confirmed score.

Traders should monitor only the official settlement timestamp on the platform, as no further catalysts exist: the game is done, the score is final, and no postponement or cancellation clause is active [2]. ESPN’s live coverage and the NBA’s official game summary confirm the result, eliminating any dependency on future announcements [1][2]. With the settlement window ending 2026-07-12T21:00:00Z—just minutes after the game’s conclusion—the market will close immediately on the Celtics’ win.

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 PolyGram, 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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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.