Harris had room to run the 1st half and just could not take advantage. Way too many times today he went down on first contact.
Also, the absolute refusal of CanaDUH to run up-tempo also kills a chance to use him to grind defenses. Hey, Tomlin, make sure to give the defense time to substitute and catch its breath. Don't get a quick 5 on the pitch to Harris, line up, run Harris over the LBer, line up immediately again, hit Freiermuth for an easy 8 on 1st down, line up, have Harris ram the ball down the defense's throat for another first down.
No, please, don't ******* do that. Make sure to get 3 on a Harris run up the gut. Huddle up, let the defense substitute to dime and get a pass rusher on the field. Drop back and look for that 5-yard out. Throw an incompletion, and huddle up again. Insure the defense can get its best squad for down-and-distance and WHATEVER you do, run a play that the defense is set up to defend. Never run the ball against dime defense, or throw on 1st down against 8 in the box.