As noted by @BobbyM1988, McKenzie out on the field without a sling but the L arm isn’t moving much. The fact that he’s out of a sling this quickly further suggests an AC joint sprain.
— Banged Up Bills (@BangedUpBills) August 28, 2021
Use the sling for comfort & pain control, but don’t want to immobilize too long. #Bills https://t.co/PPxswAWV5Q