🧮 The Contest Lab · seven tools · zero feeds · works forever
The money math DFS sites hope you skip — seven doors.
Rake, overlay, exposure, duplication risk, correlation, swap EV and your real profit — each one now lives on its own page, free, offline-simple, and identical for MLB, NBA, NFL and NHL.
Why this exists ▾
Every DFS site takes a cut before paying winners, and every lineup you build competes against your own other lineups whether you notice or not. These seven calculators are the math a sharp DFS player runs before clicking submit. They used to be piled on this one page; now each has its own room — this is the hallway.