What is every AFC West Division team's record against the over/under line as an underdog since the 2008 season?

Definitions
Team Over Record Over % Under % Total +/-
Las Vegas 93-88-4 51.4% 48.6% +1.1
Kansas City 51-50-4 50.5% 49.5% +1.4
LA Chargers 53-53-1 50.0% 50.0% +0.8
Denver 53-67-1 44.2% 55.8% +0.1