49ers' Nick Bosa (leg) listed as week to week

San Francisco 49ers defensive lineman Nick Bosa suffered a leg injury and is considered week to week.

What It Means:

Bosa was a non-participant at practice on Tuesday after he underwent an MRI that revealed a muscle strain in his leg. He is officially listed as week to week, but no determination has been made about his availability for the season opener against the Arizona Cardinals on September 13th.

San Francisco D/ST is the second-ranked fantasy defense in numberFire's preseason rankings.