What is every AFC West Division team's record against the over/under line as a road favorite in the 2018 season?

Definitions
Team Over Record Over % Under % Total +/-
Kansas City 3-1-0 75.0% 25.0% +9.3
LA Chargers 1-2-0 33.3% 66.7% -8.8
Denver 1-3-0 25.0% 75.0% -2.8
Las Vegas 0-1-0 0.0% 100.0% -7.0