Bears need Khalil Mack to be as terrifying as Rams star Aaron Donald

Mack had 12.5 sacks for the Bears in 2018, but just 8.5 in 2019 and nine last season.Marveling at Rams defensive tackle Aaron Donald has become an annual tradition for the Bears. It’s always some version of, “We better know where he’s at,” or calling him Superman, and coach Matt Nagy went straight into the recycling bin when asked about facing Donald in the season opener Sunday.“He gets schemed by every team, every week and he still dominates,” Nagy said. “It doesn’t matter. You can scheme two and three [blockers]. That dude is just unbelievable. He breaks double teams. He’s a game-changer.

“He’s like a running back out there, just flying around on the edge. He’s all over the place. He’s…