What is every AFC West Division team's record against the over/under line as a road underdog since the 2009 season?

Definitions
Team Over Record Over % Under % Total +/-
LA Chargers 38-32-1 54.3% 45.7% +2.6
Las Vegas 47-52-1 47.5% 52.5% +0.2
Kansas City 28-31-2 47.5% 52.5% +1.0
Denver 30-36-0 45.5% 54.6% +0.1