With four weeks of games to go, the NFL season is heading into its final quarter.
In the past week, we've seen the coaching chairs of St. Louis' Jeff Fisher and San Diego's Mike McCoy grow warmer, those of San Francisco's Jim Tomsula and Philadelphia's Chip Kelly grow cooler.
We've been reminded that New England isn't invincible, that Philadelphia's season could be salvageable, and that Los Angeles is unsolvable … so far.
A look around the league heading into Week 14:
When Oakland plays at Denver on Sunday, Raiders Coach Jack Del Rio, the former Broncos defensive coordinator, will go back to face the Frankenstein monster he built. Denver has the league's No. 1...