Dorsey (knee) is inactive for Sunday's matchup against the Buccaneers.
Dorsey has been hindered by a knee injury since the preseason that has caused him to miss Week 5 and now Week 7. With Dorsey out, look for starting nose tackle Mike Purcell to see even more action than usual.
Hyde (shoulder) is inactive for Sunday's Week 7 tilt versus the Bucs, the team's official site reports.
As expected, the bell-cow back will take a set with his shoulder injury, while a combination of Mike Davis, Shaun Draughn and DuJuan Harris set to handle the backfield workload against a tough Bucs run defense.
Smelter (hamstring) was added to the 49ers' practice squad, Matt Maiocco of CSN Bay Area reports.
Smelter was cut by the 49ers prior to the season after suffering a hamstring injury during training camp. Prior to the injury, the 2015 fourth-round pick had light breakout potential due to his size and athleticism. It is unclear if and when the 49ers will give Smelter a chance on the 53-man roster, or even if his hamstring injury has fully healed. While he is definitely not a player worth picking up right now, there is still potential for a late-season appearance where the team tries to get a better look at their former top receiving prospect on a team devoid of reliable options at that position.