Game 1: Offense lives or Die on Strief vs. Mack?

I highly doubt that Mack will be unaccounted for in this game.

Mack v. Armstead is fine
Mack v. Strief + chip block is fine as well.

Like others have said, I see a good amount of 21 personnel with Kuhn in the game. Run towards Mack, chip block Mack, PA pass with action towards Mack.

I'm not going to pretend like this isn't a scary match up because it is. Mack is one of those players who can ruin a game plan by himself. The trick is to employ the right game plan to do what you can to neutralize him. Strief isn't going to be out there on an island one on one against Mack the entire game. He'll have plenty of help.

I'm looking forward to seeing Armstead v Mack. Two of the best in the business and it should be fun to watch. I'm just glad Mack isn't in our division. I'd hate to know that we have to face him twice a year for the foreseeable future.