NBA Summer League: Miami Heat vs. Toronto Raptors

Platform comparison

Market context

The Toronto Raptors defeated the Miami Heat 99–90 in their NBA Summer League matchup on Thursday, 16 July, confirming the market’s 0% YES probability for a Heat win as the game has already concluded [1][2]. This result settled the prediction market immediately, as the settlement window closes after the game’s completion and the outcome is now a factual certainty rather than a forecast [2].

Historically, Summer League games between these franchises have shown volatile outcomes, with the Raptors previously beating the Heat 88–78 in the 2K23 Summer League while the Heat later dominated them 109–73 in a different year [5][6]. The current 0% probability aligns with the actual final score, reflecting how past intra-summer matchups often swing dramatically based on roster continuity and player development rather than regular-season form.

Traders should note that no further catalysts exist for this market, as the game is finished and the result is determined by the final score including overtime [2]. The only dependency was the game’s completion, which occurred on Thursday, and any postponement or cancellation clauses are now irrelevant given the confirmed 99–90 Raptors victory [1]. With the settlement window ending 17 July, the market resolves definitively to “Toronto Raptors” [2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track NBA Summer League: Miami Heat vs. Toronto Raptors 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

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

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.