Which I have never figured out why that is what we do. The best way to handle a QB is to get him off his spot, and not allow him to get into the flow of the game and start to get confidence. It's why many coaches want their QB to get some easy throws early in the game, so he starts feeling good about his game that day.
Much rather have their QB thinking from the first play of the game, they are coming after me, and I have to figure out where and get the ball out. That means, the QB has to make a read and a play or take a sack. Way to often we allow him to sit in the pocket, scan the field, and then throw to the open guy. I want a QB running for his life the entire night, much like the Eagles did to Mahomes in the SB.