SharpDelta
The prediction-market fair-value screener · Kalshi & Polymarket vs. the de-vigged consensus of 100+ sportsbooks · 3 games · updated Jul 19, 4:15 PM ET
Positive Sharp Delta right now
| Team | Vs | Sport | Start (ET) | Venue | Ask | Fair | Sharp Δ | Books |
|---|
| Los Angeles Dodgers | New York Yankees | MLB | 07/19 7:20 PM | Kalshi | 40¢ | 54¢ | +13.8 | 126 |
| New York Yankees | Los Angeles Dodgers | MLB | 07/19 7:20 PM | Kalshi | 39¢ | 46¢ | +7.2 | 126 |
MLB board
| Matchup (A vs B) | Start (ET) | Books | Fair A | Kalshi A / B | Polymarket A / B | ProphetX A / B |
|---|
| New York Yankees vs Los Angeles Dodgers | 07/19 7:20 PM | 126 | 46¢ | 39¢ / 40¢ | 48¢ / 53¢ | 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.
WNBA board
| Matchup (A vs B) | Start (ET) | Books | Fair A | Kalshi A / B | Polymarket A / B | ProphetX A / B |
|---|
| Atlanta Dream vs Chicago Sky | 07/19 4:00 PM | 109 | 84¢ | 16¢ / 85¢ | 86¢ / 16¢ | – / 20¢ |
| Phoenix Mercury vs Connecticut Sun | 07/19 7:00 PM | 143 | 62¢ | 38¢ / 62¢ | 63¢ / 38¢ | 62¢ / 39¢ |
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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