SharpDelta

The prediction-market fair-value screener · Kalshi & Polymarket vs. the de-vigged consensus of 100+ sportsbooks · 3 games · updated Jul 23, 2:15 PM ET

Positive Sharp Delta right now

No venue is currently selling ≥2.5pts below fair value. Markets are tight right now — that's an honest reading, not a broken screener.

MLB board

Matchup (A vs B)	Start (ET)	Books	Fair A	Kalshi A / B	Polymarket A / B	ProphetX A / B
Toronto Blue Jays vs Tampa Bay Rays	07/23 3:07 PM	133	49¢	52¢ / 49¢	49¢ / 52¢	49¢ / 52¢
St. Louis Cardinals vs Arizona Diamondbacks	07/23 5:15 PM	133	52¢	50¢ / 52¢	50¢ / 51¢	51¢ / 49¢
Detroit Tigers vs Kansas City Royals	07/23 6:40 PM	132	67¢	33¢ / 68¢	68¢ / 33¢	69¢ / 32¢

Prices are what each side costs right now, in cents per $1 contract, in matchup order (A / B). A venue's two sides usually sum above 100¢ — that's its spread, the equivalent of vig. A positive Sharp Delta is a side selling below fair value despite the spread.

What is Sharp Delta? Sharp Delta = the gap between a venue's ask price (Kalshi, Polymarket) and the de-vigged consensus of 100+ sportsbooks. Positive Sharp Delta means the venue is selling below fair value. Fair value = median de-vigged win probability across every sportsbook in the feed (prediction venues excluded from the consensus). Ask = the implied probability you would pay at that venue right now. Not betting advice; prices move.