The rookie LB injured his knee on a non-contact play. There doesn't appear to be ligament damage, though.
UPDATE: Joe Buscaglia of WKBW-TV just sent out this tweet:
#Bills C Eric Wood, who was the first player over to Ragland to help him up, said "I thought he cramped up, and I'm not sure what happened."
— Joe Buscaglia (@JoeBuscaglia) August 5, 2016
One week into training camp, the Buffalo Bills have their first major injury scare.
Rookie linebacker Reggie Ragland, considered to be a week one starter and a key cog of the defense this season, suffered a knee injury during today's session.