

The Milwaukee Brewers will enter the 2026 season with solid depth in their bullpen that should support the rotational arms nicely. I have taken the time to write about what pitchers such as Angel Zerpa, Trevor Megill, Abner Uribe and Jared Koenig will bring to the table.
Now, it is time to outline the next set of pitchers in the Brewers’ bullpen:
Aaron Ashby, LHP: Having been taken by Milwaukee with the 125th pick in the fourth round of the 2018 MLB Draft, Ashby is a product of the Brewers’ farm system. After working his way through the minors, Ashby made his MLB debut on June 30, 2021.
Throughout his rookie season, Ashby appeared in 13 games (four starts) and logged a 3-2 record with a 4.55 ERA. He would earn two more appearances in the postseason that resulted in struggles, as he compiled a 6.75 ERA in just 2.2 innings pitched.
In 2022, Ashby appeared in 27 games, 19 of which were starts. Despite a lopsided win-loss record (2-10) and a 4.44 ERA, he managed to strike out 126 batters across 107.1 innings of work.
Ashby missed the 2023 campaign due to a serious shoulder injury that required surgery, and his 2024 return saw him go to the bullpen. He was limited to 14 games in the 2024 season but posted decent numbers.
By last season, Ashby found his stride. In 43 games (one start), he went 5-2 with a 2.16 ERA, both career highs, though he struggled in the postseason.
In 2026, the Brewers will need Ashby to continue to develop into a reliable bullpen option. If they make the postseason once again, he will have to play better than he has.
Grant Anderson, RHP: Anderson’s first season in a Brewers uniform bore decent results as the 28-year-old logged a 3.23 ERA across 66 games. Winning decisions did not work in his favor, as he registered a 2-6 record. Anderson also had six saves and three blown saves in the regular season.
Anderson appeared in two of Milwaukee’s nine postseason games; logging two strikeouts, one hit and no earned runs across 2.2 innings of work.
Anderson relies on a four-pitch arsenal that is headlined by a sweeper. He also grades well in whiff percentage (88th percentile per Baseball Savant) and barrel percentage (91st percentile). The Brewers will need him to be productive and, ideally, take another step in his fourth MLB season.
Rob Zastryzny, LHP: Zastryzny’s first year with the Brewers resulted in little action as the lefty only appeared in nine games before he ended his season on the injured list due to left elbow tendinitis.
Last season, he was able to appear in 26 games (one start) where he logged a 2-1 record with a 2.45 ERA. Zastryzny will be 34 on Opening Day, and the Brewers will need him to stay healthy.
If they make it to the postseason, then it will be worth wondering if Zastryzny ends up on the roster, given that he has never pitched in the postseason during his seven-year MLB career.
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