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

Definitions
Team Over Record Over % Under % Total +/-
Denver 3-2-1 60.0% 40.0% +4.8
Kansas City 8-7-0 53.3% 46.7% +4.9
LA Chargers 3-3-0 50.0% 50.0% +6.5
Las Vegas 6-8-1 42.9% 57.1% +1.0