Kalshi and Polymarket MLS Odds vs the Books

Kalshi MLS contracts and Polymarket MLS contracts against the sportsbook price for every MLS match. MLS is priced three ways, home, draw, away, and each of the three venues prices each of the three outcomes; the draw gets its own row rather than being folded into a side.

The market segment switches between moneyline, spread and total. Reverse line movement (RLM) flags are read per match, the same book-side signal the Premier League board carries, so a line that moves against the public money on an MLS match is marked beside its prediction market prices.

Where Kalshi odds and Polymarket prices disagree with each other as well as with the books, the three-way gap shows it: the two prediction markets are read against each other, not only against the sportsbook consensus. Any of those gaps is a measurement in probability points, not prediction market arbitrage, and the board does not say which venue is right. Nothing on this page is a pick. The same intelligence is exposed via the GhostLeg Data API at ghostleg.ai/data-api.

Live three-way divergence intelligence for MLS Soccer: where sportsbooks, Kalshi prediction markets, and Polymarket disagree.

What this page tracks for MLS:

• Sportsbook vs. Kalshi vs. Polymarket implied probability gaps
• Sharp money consensus via Pinnacle reference sportsbook
• Closing line value (CLV) analytics by signal score band
• Line velocity and steam move detection
• Reverse line movement (RLM) flags
• Book disagreement index across major sportsbooks

Same intelligence is exposed via the GhostLeg Data API. ghostleg.ai/data-api, GhostLeg: Sports Betting Signal Intelligence