SharpDelta

The prediction-market fair-value screener · Kalshi & Polymarket vs. the de-vigged consensus of 100+ sportsbooks · 6 games · updated Sep 9, 8:15 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
Los Angeles Dodgers vs Cincinnati Reds	09/09 10:10 PM	174	71¢	73¢ / 28¢	72¢ / 28¢	73¢ / 29¢
Atlanta Braves vs Tampa Bay Rays	09/10 12:15 PM	107	52¢	53¢ / 49¢	52¢ / 48¢	– / –
Philadelphia Phillies vs Houston Astros	09/10 1:05 PM	103	61¢	64¢ / 38¢	63¢ / 37¢	– / –
Seattle Mariners vs Texas Rangers	09/10 4:10 PM	109	54¢	55¢ / 46¢	55¢ / 45¢	– / –
New York Yankees vs Colorado Rockies	09/10 7:05 PM	103	73¢	75¢ / 26¢	75¢ / 25¢	– / –
Chicago White Sox vs Pittsburgh Pirates	09/10 7:40 PM	94	50¢	51¢ / 49¢	51¢ / 49¢	– / –

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.