Harrison did not factor into the decision in Tuesday's game against the Mets, allowing one run on six hits and one walk while striking out five across five innings.
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.
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.
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.
The Brewers recalled Naylor from Triple-A Nashville to serve as the 27th player for Sunday's Little League Classic against Atlanta, Todd Rosiak of the Milwaukee Journal Sentinel reports.
Ashby gave up two hits in a scoreless ninth inning Saturday to record his second save of the season in a 4-1 win over Atlanta. He didn't strike out a batter.
Henderson (8-2) picked up the win in Saturday's 4-1 victory over Atlanta, allowing one run on five hits and two walks over six innings. He struck out four.
Manager Pat Murphy said Saturday that he expects Frelick (shoulder) to return from the injured list during Milwaukee's upcoming series against the Mets, Hunter Baumgardt of Fox Sports 920 Milwaukee reports.
Woodruff did not undergo surgery on his right shoulder and is scheduled to begin a throwing program Wednesday, Curt Hogg of the Milwaukee Journal Sentinel reports.