SharpDelta

The prediction-market fair-value screener · Kalshi & Polymarket vs. the de-vigged consensus of 100+ sportsbooks · 14 games · updated Aug 5, 8:16 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)BooksFair AKalshi A / BPolymarket A / BProphetX A / B
Arizona Diamondbacks vs San Diego Padres08/05 9:40 PM16544¢45¢ / 56¢44¢ / 56¢44¢ / 56¢
Seattle Mariners vs Detroit Tigers08/05 9:40 PM16558¢59¢ / 42¢59¢ / 42¢59¢ / 42¢
Baltimore Orioles vs Los Angeles Angels08/06 12:35 PM7760¢61¢ / 40¢60¢ / 40¢ /
Cincinnati Reds vs Athletics08/06 12:40 PM7859¢60¢ / 41¢60¢ / 40¢ /
Cleveland Guardians vs New York Mets08/06 1:10 PM10750¢50¢ / 51¢50¢ / 51¢ /
Milwaukee Brewers vs Pittsburgh Pirates08/06 2:10 PM10656¢57¢ / 44¢57¢ / 43¢ /
Chicago Cubs vs Toronto Blue Jays08/06 2:20 PM9948¢49¢ / 52¢49¢ / 51¢ /
Seattle Mariners vs Detroit Tigers08/06 4:10 PM10654¢55¢ / 46¢54¢ / 46¢ /
Philadelphia Phillies vs Washington Nationals08/06 6:05 PM7573¢75¢ / 26¢75¢ / 25¢ /
Boston Red Sox vs Chicago White Sox08/06 7:10 PM10062¢63¢ / 38¢62¢ / 39¢ /
Atlanta Braves vs Miami Marlins08/06 7:15 PM10259¢60¢ / 41¢59¢ / 41¢ /
Kansas City Royals vs Minnesota Twins08/06 7:40 PM9552¢53¢ / 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.

WNBA board

Matchup (A vs B)Start (ET)BooksFair AKalshi A / BPolymarket A / BProphetX A / B
Chicago Sky vs Los Angeles Sparks08/05 9:00 PM16057¢57¢ / 44¢57¢ / 44¢57¢ / 44¢
Indiana Fever vs Las Vegas Aces08/06 7:00 PM14651¢52¢ / 49¢51¢ / 50¢ /
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.
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