Mid-season QB changes are as much of a part of the NFL as beer and hot dogs are.
Opening day starters start to get queasy around Week 4 or 5 knowing that the backup is chomping at the bit to get in there. Struggling veterans start to look over their shoulder for the rookies.
Fanbases divide. Sportswriters and commentators debate.
Here are the grades for all NFL mid-season QB moves.