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

Definitions
Team Over Record Over % Under % Total +/-
Indianapolis 55-46-2 54.5% 45.5% +2.4
Tennessee 63-54-1 53.9% 46.2% +0.9
Jacksonville 74-74-1 50.0% 50.0% +0.7
Houston 55-64-1 46.2% 53.8% +0.3