What is every Southwest Division team's record against the over/under line as an underdog since the 2012-2013 season?

Definitions
Team Over Record Over % Under % Total +/-
San Antonio 227-194-7 53.9% 46.1% +1.0
Memphis 256-257-4 49.9% 50.1% +0.7
Houston 224-228-4 49.6% 50.4% +0.9
Dallas 239-253-6 48.6% 51.4% +0.6
New Orleans 269-294-6 47.8% 52.2% +0.1