TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 10, 11:09 PM EST
Kalshi
This event group covers the NBA Summer League matchup between the Toronto Raptors and Boston Celtics scheduled for July 10, 2026 at 9:00 PM ET. Polymarket offers a simple winner-take-all market, while Kalshi provides spread-based markets across multiple point differentials. Both markets resolve based on the final score including overtime.
In the upcoming NBA Summer League game, scheduled for July 10 at 9:00PM ET: If the Toronto Raptors win, the market will resolve to "Toronto Raptors". If the Boston Celtics win, the market will resolve to "Boston Celtics". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. The result will be determined based on the final score including any overtime periods.
Resolution is determined by the final point differential in the Boston vs Toronto game. For Toronto victories, the market resolves Yes if Toronto wins by more than 1.5, 3.5, 6.5, 9.5, or 12.5 points. For Boston victories, the market resolves Yes if Boston wins by more than 1.5, 3.5, 6.5, or 9.5 points. Each spread threshold represents a distinct outcome; only the applicable spread(s) matching the actual final margin will resolve to Yes. Games that end in a tie or are postponed/cancelled may have different resolution procedures as specified in secondary rules.
Polymarket and Kalshi can price this market differently due to variations in their user bases, contract structures, and liquidity pools. Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform may attract traders with distinct information sets or risk tolerances, and differences in how each frames the outcome—such as margin thresholds or payout mechanics—can create price gaps. Arbitrage opportunities sometimes emerge when one platform's odds diverge significantly from the other, incentivizing traders to exploit the spread until prices converge.
Key catalysts include roster announcements, player injuries or absences, recent Summer League performance trends, and coaching decisions about lineup rotation. Media coverage highlighting either team's prospects or draft implications can shift trader sentiment. As game day approaches, weather conditions, venue factors, and late-breaking team news may trigger price movement. Trading volume often spikes closer to tip-off as new information crystallizes and traders refine their positions ahead of the final outcome.