Manager Pat Murphy said Tuesday that Gasser will be available out of the bullpen the next couple days versus the Mets, if needed, but remains lined up to start this weekend against the Rangers, Curt Hogg of the Milwaukee Journal Sentinel reports.
Mitchell (forearm) is starting in center field and batting seventh Tuesday against the Mets, Adam McCalvy of MLB.com reports.
Bauers is out of the lineup for Tuesday's game against the Mets due to some swelling in his foot, Adam McCalvy of MLB.com reports.
The Brewers reinstated Frelick (shoulder) from the 10-day injured list Tuesday, though he's not in the lineup against the Mets, Adam McCalvy of MLB.com reports.
The Brewers designated Ornelas for assignment Tuesday, Adam McCalvy of MLB.com reports.
Romero (appendectomy) will begin a rehab assignment Tuesday at High-A Wisconsin.
The Brewers optioned Naylor to Triple-A Nashville on Monday.
Uribe (forearm) will begin a rehab assignment at High-A Wisconsin on Tuesday.
Drohan (6-5) allowed two runs on eight hits and three walks while striking out five over five innings to take the loss versus Atlanta on Sunday in the Little League Classic.
Mitchell suffered a right forearm contusion Sunday against Atlanta, Todd Rosiak of the Milwaukee Journal Sentinel reports.
