2025-06-29
The Core Concept Look: every sportsbook tucks a hidden commission into the odds, called the overround. It’s the cushion that guarantees the house stays in the green, no matter how the dice roll. How the Overround Is Calculated Here is the deal: take a simple two‑way market—Team A at 2.00, Team B at 2.00. Add the implied probabilities (1/2 + 1/2) and you get 1.00, which is a fair line. Slip in a margin, bump the odds to 1.90 each, and the sum swells to 1.05. That extra 0.05 is the overround, a 5 % tax on every unit wagered. Why […]
