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

Definitions
Team Over Record Over % Under % Total +/-
Kansas City 24-16-1 60.0% 40.0% +4.3
Las Vegas 61-58-2 51.3% 48.7% +0.6
LA Chargers 38-46-0 45.2% 54.8% -0.5
Denver 31-47-0 39.7% 60.3% -1.3