The NFL preseason has ended. The regular season is less than a week away from kicking off and that means it's time for teams to cut their rosters down to 53 players before Saturday's deadline.

After the Chicago Bears traded for Oakland Raiders pass rusher Khalil Mack, they promptly signed him to a six-year, $141 million contract extension that includes $90 million in guarantees.

In last year's draft, Kansas City netted a Pro Bowl running back and an heir apparent under center. Not too shabby, eh? Nick Shook provides rookie grades -- and offseason outlooks -- for each AFC West team.

Oakland Raiders running back Marshawn Lynch again sat during the national anthem. Rookie teammate Shalom Luani took a knee and Derek Carr showed support to Khalil Mack.