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 in Las Vegas, with Anton Watson scoring 15 points for the visitors. This outcome aligns with the 100% YES crowd-implied probability on the prediction market, confirming the Celtics as the winner and resolving the contract to “Boston Celtics” rather than leaving it open or triggering the 50–50 cancellation clause.

Historically, Summer League markets with 100% implied probability rarely deviate, as the lower-stakes environment produces fewer unpredictable upsets than regular-season games. Comparable cases from recent years show that when a defending champion like the Celtics faces a rebuilding side like the Hornets in Summer League, the line typically mirrors the final result, with sportsbooks often pricing the favourite at −12 to −18 points. Here, the prediction-market certainty matches the sportsbook moneyline favouring Boston, while analyst consensus from Bettors Insider initially projected a Hornets win 89–82, creating a notable divergence that the final score has now invalidated [1].

Traders should monitor post-game roster announcements and injury updates for Summer League standouts, as these can influence future contract pricing on related player-performance markets. The game aired live on ESPN2 and was streamed via DIRECTV, fubo, and the ESPN app, ensuring full score verification for settlement [9]. With the settlement window closing on 12 July at 21:00 UTC and the result already confirmed, no further catalysts will alter this contract’s resolution.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews NBA Summer League: Boston Celtics vs. Charlotte Hornets across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi vs Polymarket, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Kalshi vs Polymarket. 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'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.