So I know there are still around 25-30 games left, but the entire Southwest division has been a money making machine this season.

Has there ever been an entire division well above .500 ATS at the end of the season and if so does it happen very often?

SOUTHWEST
TEAM RECORD ATS ATS HOME ATS AWAY ATS FAVE ATS DOG OU RECORD DIV RECORD STREAK
San Antonio 45-13 32-24-2 13-9-2 19-15 28-21-2 4-3 26-31-1 11-2 1W
Memphis 37-18 32-22-1 17-12-1 15-10 27-17-1 5-5 23-31-1 4-5 7W
Houston 31-27 32-25-1 18-9 14-16-1 17-13 15-12-1 32-26 4-7 1L
Dallas 25-30 32-23 15-12 17-11 15-10 17-13 34-20-1 4-5 1L
New Orleans 20-37 31-26 12-15 19-11 6-5 25-21 31-26 4-8 1W