Carolina took years off of CMac's career running him the way they did, which was just stupid. That said, he's managed to stay healthy with a more prudent number of touches at SF. AK hasn't been quite the same the last couple of seasons after his injuries.
more so than injuries, i think the offense has changed a lot under DA and it’s hurting Kamara’s production the most. he’s taken off the field way too often, and when he’s in it seems like defenses are tipped off to what he’s going to do.