Nick Bosa questionable, Isaac Guerendo out for 49ers

49ers head coach Kyle Shanahan called running back Isaac Guerendo a long shot to play against the Dolphins earlier this week and he moved to no shot on Friday. Guerendo was ruled out for Week 16 when the team released its final injury report ahead of their trip to Miami. Guerendo has had a foot injury for a couple of weeks and he also injured his hamstring last week. Left tackle Trent Williams (ankle) remains out and Shanahan said this week that the veteran is unlikely to return to action this season. Defensive end Nick Bosa (hip, oblique) returned to practice after sitting out on Thursday. He's listed as questionable along with linebacker Dre Greenlaw (Achilles, knee) and defensive lineman Robert Beal (ankle).