What is every Southwest Division team's record against the over/under line as an underdog since the 2014-2015 season?

Definitions
Team Over Record Over % Under % Total +/-
San Antonio 208-177-7 54.0% 46.0% +1.0
Memphis 224-226-4 49.8% 50.2% +0.8
Houston 193-202-4 48.9% 51.1% +0.5
New Orleans 216-234-6 48.0% 52.0% -0.1
Dallas 193-226-4 46.1% 53.9% 0.0