What is every Southwest Division team's record against the over/under line as an underdog since the 2011-2012 season?

Definitions
Team Over Record Over % Under % Total +/-
San Antonio 239-199-7 54.6% 45.4% +1.1
Dallas 254-263-6 49.1% 50.9% +0.6
Houston 236-246-6 49.0% 51.0% +0.8
Memphis 264-276-4 48.9% 51.1% +0.4
New Orleans 292-324-8 47.4% 52.6% +0.1