What is every AFC West Division team's record against the over/under line as an underdog? Includes the 2019 season plus historical records.

Definitions
Team Over Record Over % Under % Total +/-
Kansas City 2-1-0 66.7% 33.3% -0.2
Oakland 6-4-0 60.0% 40.0% +3.5
Denver 5-6-0 45.5% 54.5% -4.0
LA Chargers 2-3-0 40.0% 60.0% -5.6