NFL conference championship injuries: 49ers' Elijah Mitchell out with groin injury; Bengals down two OL again | CBS Sports Headlines NFL conference championship injuries: 49ers' Elijah Mitchell out with groin injury; Bengals down two OL again Injury updates for each of the four remaining teams ahead of the conference championship … Continue reading NFL conference championship injuries: 49ers' Elijah Mitchell out with groin injury; Bengals down two OL again