Suffers MCL sprain
Coach Kyle Shanahan noted Monday that Kroft will miss a few weeks with an MCL sprain, Jennifer Lee Chan of NBC Sports Bay Area reports.
Kroft's injury is a hit to the 49ers' depth at tight end, but it appears as though starter George Kittle (groin) is trending toward a return to action Week 3. Also in the mix for complementary TE snaps once Kittle is back are Charlie Woernerand Ross Dwelley.
More Miami Dolphins Fantasy Football News

River Cracraft
WR | MIA
Won't play Week 4
Cracraft (shoulder) has been ruled out for Sunday's game in Buffalo, David Furones of the South Florida Sun Sentinel reports.

Durham Smythe
TE | MIA
Back practicing fully Thursday
Smythe (hamstring) was upgraded to a full practice Thursday, Travis Wingfield of the Dolphins' official site reports.

Jaylen Waddle
WR | MIA
Exits concussion protocol
Waddle cleared the NFL's concussion protocol Thursday, David Furones of the South Florida Sun Sentinel reports.

Durham Smythe
TE | MIA
Limited to begin week
Smythe (hamstring) was listed as limited at Wednesday's practice, David Furones of the South Florida Sun Sentinel reports.

Salvon Ahmed
RB | MIA
Limited to start week
Ahmed (groin) was listed as limited at Wednesday's practice, David Furones of the South Florida Sun Sentinel reports.

Salvon Ahmed
RB | MIA
Progressing in recovery
Ahmed (groin) is "progressing," per coach Mike McDaniel, Adam Beasley of Pro Football Network reports.

Jaylen Waddle
WR | MIA
In line to practice fully
Waddle (concussion) is slated to practice in full Wednesday, Marcel Louis-Jacques of ESPN.com reports.

Jaylen Waddle
WR | MIA
Still in concussion protocol
Waddle remains in concussion protocol Monday, Marcel Louis-Jacques of ESPN.com reports.

Durham Smythe
TE | MIA
Only targeted once in Week 3
Smythe secured his lone target for 15 yards during Sunday's 70-20 win over the Broncos.
De'Von Achane
RB | MIA
Eclipses 200-yard mark in win
Achane rushed 18 times for 203 yards and two touchdowns and brought in all four targets for 30 yards and two more scores in the Dolphins' 70-20 win over the Broncos on Sunday.