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 41-34-1 54.7% 45.3% +3.1
Las Vegas 50-56-2 47.2% 52.8% +0.3
Denver 33-38-1 46.5% 53.5% +0.5
Kansas City 30-37-2 44.8% 55.2% +0.4