The Reds optioned Wiemer to Triple-A Louisville on Wednesday.
The Reds recalled Wiemer from Triple-A Louisville on Sunday.
The Brewers optioned Wiemer to Triple-A Nashville on Sunday.
The Brewers activated Wiemer (knee) from the 10-day injured list Monday.
Wiemer (knee) went 1-for-3 with a run scored in his first rehab game with Triple-A Nashville on Thursday.
Brewers manager Pat Murphy said Sunday that Wiemer (knee) is expected to be sidelined for 2-to-3 weeks, Curt Hogg of the Milwaukee Journal Sentinel reports.
Wiemer was diagnosed with a strained popliteus muscle in his left knee Saturday, Curt Hogg of the Milwaukee Journal Sentinel reports.
The Brewers placed Wiemer (knee) on the 10-day IL on Saturday.
Wiemer was removed from Friday's game versus the Cubs with an apparent left knee injury, Curt Hogg of the Milwaukee Journal Sentinel reports.
The Brewers recalled Wiemer from Triple-A Nashville on Sunday.