4 years agoSan Francisco 49ers defensive end Nick Bosa was diagnosed with a muscle strain in his leg following an MRI on Tuesday. The injury will keep him out on a week-to-week basis, which could put his availability for Week 1 in peril. Head coach Kyle Shanahan remains optimistic that Bosa will be able to return in time, but his progress will be something to keep an eye on. Having been named the Defensive Rookie of the Year in his first season in 2019, Bosa is a key cog of the San Francisco pass-rushing unit, which would be hard-pressed to come up with a replacement.--Jesse Borek
Source: ProFootballTalk