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

Definitions
Team Over Record Over % Under % Total +/-
LA Chargers 37-27-1 57.8% 42.2% +3.1
Denver 29-24-2 54.7% 45.3% +2.2
Las Vegas 43-44-2 49.4% 50.6% +0.9
Kansas City 28-34-2 45.2% 54.8% +0.6