Middle / Middling
Betting both sides of a market at different lines so a result in between wins both bets.
A middle opportunity arises when two sportsbooks have meaningfully different spreads on the same game. You bet both sides; if the final score lands between the two spreads, you win both bets. If it lands outside, you only lose the juice on one.
Example:
- Book A: Packers -3
- Book B: Packers +5
- You bet Packers -3 at Book A and Bears +5 at Book B
- Final: Packers win 28-24 (margin of 4) → Both bets win
- Final outside that 4-point window → one wins, one loses, you only lose the vig on the loser
Middles are rare and small-margin, but a sustainable middling program is genuinely +EV. Hard to execute in a retail-only state like Wisconsin today.