Sportsbook Efficiency

Empirical sportsbook efficiency, measured by comparing de-vigged prices to actual outcomes. Close Brier scores the final line; Open Brier scores the first posted line. Avg Move shows mean |close − open| (points for spread/total/prop, fair-prob delta for moneyline). Lower Brier = more accurate pricing. Hit rate = how often the devigged favorite won.

League: NBA NHL MLB WNBA NFL

WNBA — Total (30 Days)

As of 2026-10-27
Bookmaker # Markets Brier Open Brier Close Log-Loss Open Log-Loss Close Hit Rate
DraftKings 21 —
0.2482
best
—
0.6895
best
0.750
best
FanDuel 21 —
0.2488
+0.0007
—
0.6908
+0.0013
0.619
−0.131
Bookmaker 21 —
0.2490
+0.0008
—
0.6912
+0.0016
0.688
−0.063
Pinnacle 20 —
0.2500
+0.0018
—
0.6932
+0.0037
0.500
−0.250
BetOnline 21 —
0.2510
+0.0028
—
0.6951
+0.0056
0.462
−0.288

Data window: January 18, 2026 – October 26, 2026