The Brewers recalled Monasterio from Triple-A Nashville on Saturday.
The Brewers optioned Monasterio to Triple-A Nashville on Monday.
Monasterio was recalled from Triple-A Nashville by the Brewers on Friday.
The Brewers optioned Monasterio to Triple-A Nashville on Sunday.
Monasterio is starting at third base and batting ninth in Friday's opener against the Mets.
The Brewers informed Monasterio on Monday that he'll be included on the Opening Day roster, Curt Hogg of the Milwaukee Journal Sentinel reports.
Monasterio went 1-for-3 with an RBI single in Wednesday's 2-0 win over Cincinnati.
Monasterio is not in the lineup for Monday's game against the Cardinals.
Monasterio will sit Saturday against the Nationals.
Monasterio is not in the lineup Tuesday versus the Twins.