NBA Summer League: Toronto Raptors vs. Boston Celtics

Platform comparison

Market context

The Boston Celtics defeated the Toronto Raptors 115–101 in their NBA Summer League matchup on 10 July 2026, with Jaylen Brown scoring 26 points and Jayson Tatum adding 23 points and 13 rebounds[1]. This result confirms the game has already concluded, meaning the prediction market titled “NBA Summer League: Toronto Raptors vs. Boston Celtics” should have resolved to “Boston Celtics” rather than retaining a 0% YES probability for a Raptors win.

Historically, Summer League games between these franchises show a clear Celtics dominance: in regular-season head-to-head records, Boston won 73 games compared to Toronto’s 43, with Boston averaging 104.5 points per game versus Toronto’s 101.1[4]. In the 2025–26 season, Boston finished with a 56–26 record (.683 win percentage) while Toronto posted 46–36 (.561), reinforcing the structural gap that typically translates even to developmental squads[6]. Programmatic traders would flag this 0% market probability as a data error or stale feed, since the outcome is already known and the settlement window (ending 2026-07-11T01:00:00Z) has passed.

Key catalysts for automated strategies include verifying the official game result via ESPN or NBA.com APIs to trigger conditional order closures, and monitoring for any system delays in market resolution that could leave positions open post-event[3][8]. A recent game recap on NBA.com confirms the 112–96 Celtics win in an earlier matchup, but the 115–101 Summer League result is the definitive settlement driver[1][7]. Copy-trading bots should cross-reference live score feeds from 365Scores or ESPN to avoid executing on outdated probabilities once the game clock expires[2][3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track NBA Summer League: Toronto Raptors vs. Boston Celtics across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Review UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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.