The Brewers transferred Dunn (back) from the 10-day injured list to the 60-day IL on Monday, Adam McCalvy of MLB.com reports.
Manager Pat Murphy said Saturday that Dunn has a disc issue in his back and is expected to remain on the injured list for at least another month, Todd Rosiak of the Milwaukee Journal Sentinel reports.
The Brewers recalled Dunn from Triple-A Nashville on Wednesday and placed him on the 10-day injured list with a back strain.
The Brewers optioned Dunn to Triple-A Nashville on Wednesday.
Dunn was scratched from Sunday's lineup against the White Sox.
Dunn was recalled by the Brewers from Triple-A Nashville on Sunday.
The Brewers optioned Dunn to Triple-A Nashville on Wednesday.
Dunn appears set to be optioned to Triple-A Nashville prior to Wednesday's game versus the Pirates, Curt Hogg of the Milwaukee Journal Sentinel reports.
Dunn is out of the lineup for Monday's game against the Royals.
Dunn will start at third base and bat seventh in Sunday's game against the Cubs.