SharpDelta

The prediction-market fair-value screener · Kalshi & Polymarket vs. the de-vigged consensus of 100+ sportsbooks · 14 games · updated Aug 3, 7:15 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)BooksFair AKalshi A / BPolymarket A / BProphetX A / B
Milwaukee Brewers vs Pittsburgh Pirates08/03 7:40 PM13058¢59¢ / 42¢59¢ / 42¢58¢ / 42¢
Texas Rangers vs San Francisco Giants08/03 8:05 PM13055¢55¢ / 46¢55¢ / 45¢55¢ / 45¢
Chicago Cubs vs Los Angeles Dodgers08/03 8:05 PM12846¢47¢ / 55¢46¢ / 54¢47¢ / 54¢
Houston Astros vs Toronto Blue Jays08/03 8:10 PM13056¢56¢ / 45¢56¢ / 45¢57¢ / 44¢
Colorado Rockies vs Tampa Bay Rays08/03 8:40 PM13238¢38¢ / 63¢37¢ / 63¢38¢ / 63¢
Arizona Diamondbacks vs San Diego Padres08/03 9:40 PM13251¢52¢ / 49¢51¢ / 49¢ /
Baltimore Orioles vs Los Angeles Angels08/04 6:35 PM955¢57¢ / 44¢57¢ / 43¢ /
Philadelphia Phillies vs Washington Nationals08/04 6:40 PM10166¢68¢ / 33¢68¢ / 32¢ /
Cincinnati Reds vs Athletics08/04 6:40 PM9256¢57¢ / 43¢57¢ / 43¢ /
Cleveland Guardians vs New York Mets08/04 6:40 PM9156¢57¢ / 44¢56¢ / 45¢ /
New York Yankees vs St. Louis Cardinals08/04 7:05 PM760¢60¢ / 40¢60¢ / 40¢ /
Boston Red Sox vs Chicago White Sox08/04 7:10 PM3554¢54¢ / 47¢54¢ / 46¢ /
Atlanta Braves vs Miami Marlins08/04 7:15 PM3455¢56¢ / 45¢55¢ / 45¢ /
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 Phoenix Mercury08/03 9:00 PM16347¢45¢ / 55¢46¢ / 55¢46¢ / 55¢
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.
2 venue quote(s) withheld this run: they disagreed with a 20+ book consensus by more than 15 points, which indicates a data fault rather than an opportunity.
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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