What is every AFC West Division team's record against the over/under line as an underdog in the 2013 season?

Definitions
Team Over Record Over % Under % Total +/-
Kansas City 2-2-0 50.0% 50.0% +1.5
Las Vegas 6-7-1 46.2% 53.9% +3.6
LA Chargers 5-7-0 41.7% 58.3% -1.9