Brewers roster move to make #3: Select LHP Robert Gasser, Designate LHP Andrew Chafin for assignment
This is a move that the Brewers maybe should make, but appear unlikely to pull the trigger on. Andrew Chafin has struggled since coming over at the Trade Deadline and is near the bottom of the bullpen trust tree for manager Craig Counsell. Chafin only comes up in low leverage situations where the game outcome is usually already decided and he's even had struggles putting clean innings together in those spots.
Robert Gasser has been exceptional this season in Triple-A, posting a 3.79 ERA and leading the International League in strikeouts. He's been worthy of a promotion but there hasn't been a spot in the rotation to bring him up in. In this case, he'd probably pitch out of the bullpen during this final week of the season but the Brewers haven't been putting him in those spots in Triple-A, making this a sub-optimal fit.
However, I could see a path to Gasser pitching some innings in a bulk role this final week. As Corbin Burnes, Brandon Woodruff, and Freddy Peralta make their final turns through the starting rotation and the team prepares for October, those three guys are likely to have short starts so they can be at 100% when it comes to the Wild Card round. That will leave a lot of innings for the bullpen to cover and someone like Gasser could take those innings.
The Brewers likely would've preferred Aaron Ashby come up and fill that role, but it's been reported that he's not expected to be activated despite being on rehab assignment. The results on the field haven't gone well for Ashby on rehab and he's not going to get the call, which pushes Robert Gasser closer to the front of the line.
This is the move I think they should make, giving Gasser an opportunity, but the situation I see as most likely is bringing back up Colin Rea and optioning someone like J.B. Bukauskas. Rea didn't report to Nashville despite being optioned and seems primed to return for the final week if the Brewers need it.