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 51-47-2 52.0% 48.0% +1.1
Las Vegas 92-88-5 51.1% 48.9% +1.1
Denver 56-55-2 50.4% 49.5% +1.6
Kansas City 54-57-5 48.6% 51.3% +0.5