What is every AFC West Division team's record against the over/under line as an underdog since the 2006 season?

Definitions
Team Over Record Over % Under % Total +/-
LA Chargers 50-46-2 52.1% 47.9% +1.2
Denver 54-51-3 51.4% 48.6% +1.6
Las Vegas 88-88-5 50.0% 50.0% +1.0
Kansas City 53-57-5 48.2% 51.8% +0.3