It’s not Goff. Goff played well overall against the Saints. He was 28 of 40 for 391 and 3 TDs.
It’s not Gurley. Gurley played well overall against the Saints. He was getting 5.2 a carry.
1 thing is, both games were on the road in places known to be challenging for visitors.
But on top of that–in both games, Donald was relatively quiet. The Saints and Bears handled him with an effective game plan that basically subtracted him.