What is every AFC West Division team's record against the over/under line as an underdog in the 2015 season?

Definitions
Team Over Record Over % Under % Total +/-
Kansas City 3-1-1 75.0% 25.0% +3.4
Las Vegas 8-3-0 72.7% 27.3% +5.5
Denver 3-3-0 50.0% 50.0% +2.7
LA Chargers 3-7-0 30.0% 70.0% -5.6