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 243-256-6 48.7% 51.3% +0.6
New Orleans 270-297-6 47.6% 52.4% 0.0