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

Definitions
Team Over Record Over % Under % Total +/-
Indianapolis 51-40-1 56.0% 44.0% +2.3
Tennessee 55-50-1 52.4% 47.6% +0.1
Jacksonville 67-66-1 50.4% 49.6% +0.5
Houston 53-63-1 45.7% 54.3% +0.3