Polymarket and Kalshi use different spread thresholds and framing. Polymarket offers spreads at -1.5 and -2.5 goals for both teams, while Kalshi frames identical thresholds but uses 'more than' language (>1.5, >2.5) which creates a subtle logical difference in boundary interpretation.
Hero Tip:
The core outcome is the same across platforms for most realistic scores, but traders should note that Polymarket's 'win by 2 or more goals' is equivalent to Kalshi's '>1.5 goals' — both resolve the same way. However, Kalshi's explicit 'more than' phrasing may create ambiguity at exact boundary scores (e.g., a 2-0 win). Verify the final score carefully against each platform's exact wording before settlement.
Critical Divergence Points:
Polymarket: Aligned with Kalshi on core spread logic: Polymarket offers four spread markets (Nice -1.5, PSG -1.5, Nice -2.5, PSG -2.5) plus three over/under markets (1.5, 2.5, 3.5, 4.5 combined goals) and one both-teams-to-score market. All resolve on official ligue1.com final score within 90 minutes plus stoppage time. Key quote: 'This market will resolve to OGC Nice if OGC Nice win the game by 2 or more goals. Otherwise, this market will resolve to Paris Saint-Germain FC.'
Kalshi: Aligned with Polymarket on spread outcomes: Kalshi offers four spread markets using 'more than' language (PSG >1.5, PSG >2.5, Nice >2.5, Nice >1.5), all resolving YES/NO based on the same underlying goal-differential thresholds. Key quote: 'If PSG wins by more than 1.5 goals in the PSG at Nice professional Ligue 1 soccer game originally scheduled for Mar 21, 2026 after 90 minutes plus stoppage time, then the market resolves to Yes.'
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.
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