Square Book
A sportsbook that caters primarily to recreational bettors and often copies lines from sharp books with added margin.
Like a local shop that prices items based on what the big store charges, sometimes forgetting to update.
Why it matters
Square books often have slower line adjustments and wider vig, creating windows where prices lag behind the true market.
How DMP uses this
DMP compares square book odds against sharp consensus to identify mispriced lines where books have not adjusted yet.
Common mistake
Thinking square books have worse odds on everything -- sometimes their promos or slow adjustments create +EV spots.