Schwartz (knee) was placed on the Dolphins' reserve/injured list Sunday.
Schwartz suffered a ligament tear in his left knee during Friday's preseason loss to Tampa Bay, Barry Jackson of the Miami Herald reports.
Schwartz signed with the Dolphins' practice squad Monday, Adam Schefter of ESPN reports.
Schwartz (hamstring) had a workout with the Dolphins on Tuesday, Aaron Wilson of KPRC 2 Houston reports.
Cleveland waived Schwartz (hamstring) from injured reserve Tuesday, Aaron Wilson of KPRC 2 Houston reports.
Schwartz caught his lone target for seven yards, had one carry for seven yards and fumbled in Thursday's preseason victory over the Jets.
Schwartz (hamstring) was placed on the active/NFI list Friday.
Schwartz participated in Cleveland's mandatory minicamp last week after recovering from an undisclosed injury, Scott Petrak of the BrownsZone reports.
Cleveland placed Schwartz (concussion) on injured reserve Wednesday.
Schwartz (concussion) won't practice Wednesday, Anthony Poisal of the Browns' official site reports.