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 at Cox Pavilion in Las Vegas, with Anton Watson scoring 15 points for the victors [1]. This result confirms the 100% YES crowd-implied probability for a Celtics win, as the game has already concluded and the final score is settled including no overtime [1][2].

Historically, Summer League outcomes involving established franchises like the Celtics often align with pre-game probabilities when rosters feature experienced draft picks, mirroring patterns seen in previous Las Vegas tournaments where top-tier teams dominated early rounds [2][8]. The Celtics’ 1–0 start compared to the Hornets’ 1–1 record further contextualises the certainty of this outcome, reflecting a consistent trend where better-prepared squads secure wins without late volatility [2][8].

Traders evaluating this market programmatically should monitor official NBA Summer League schedules and real-time score feeds from ESPN or Sofascore to confirm settlement before executing conditional orders or copy-trading strategies [2][4]. With the settlement window closed post-game, no further catalysts such as postponements or cancellations apply, rendering the market fully resolved and eliminating dependency on future announcements [1][7].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Bot UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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.

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.