NBA Summer League: Toronto Raptors vs. Boston Celtics

Platform comparison

Market context

The Boston Celtics defeated the Toronto Raptors 83–80 in their NBA Summer League clash on Friday, 10 July 2026, confirming the outcome that the market had already priced as certain. With the game completed and the result final, the contract for a Toronto win now sits at 0% YES, reflecting the on-chain reality that the conditional tokens for that outcome are worthless. Traders on Polygon using USDC see the market locked, as the settlement window closes shortly after the event, leaving no room for further price movement on the Raptors’ victory.

Historically, Summer League moneyline markets resolve quickly once the final whistle blows, with prices collapsing to 0% or 100% within minutes of the official result. Comparable cases from the 2025 Las Vegas tournament show that once a game is confirmed complete, liquidity evaporates and the implied probability aligns perfectly with the actual score, regardless of pre-game odds. In this instance, the Celtics’ narrow win has rendered the Raptors’ share valueless, mirroring past instances where underdogs failed to cover in tight Summer League finishes.

Traders should monitor the official NBA game summary for any rare post-game disputes, though the 83–80 score is already recorded on ESPN and the NBA’s official site. No further announcements are expected, as the conditional tokens for the Celtics win will automatically redeem at 1 USDC each. The only dependency now is the settlement timestamp, which closes at 01:00 UTC on 11 July, finalising the 50–50 cancellation clause as irrelevant since the game was not cancelled.

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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

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 Polymarket Scam?. 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.