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.
WNBA — Spread (30 Days)
As of 2026-10-27| Bookmaker | # Markets | Brier Open | Brier Close | Log-Loss Open | Log-Loss Close | Hit Rate |
|---|---|---|---|---|---|---|
| Bookmaker | 21 | — |
0.2477
best
|
— |
0.6885
best
|
0.563
−0.085
|
| Pinnacle | 20 | — |
0.2491
+0.0014
|
— |
0.6914
+0.0028
|
0.647
best
|
| BetOnline | 21 | — |
0.2499
+0.0022
|
— |
0.6930
+0.0045
|
0.545
−0.102
|
| FanDuel | 21 | — |
0.2503
+0.0026
|
— |
0.6937
+0.0052
|
0.471
−0.176
|
| DraftKings | 21 | — |
0.2520
+0.0043
|
— |
0.6971
+0.0085
|
0.429
−0.218
|
Data window: January 18, 2026 – October 26, 2026