The Miami Marlins have some concerns in the rotation, but also some major positives. The bullpen is a different story however. The Fish finalized yet another change to the group by out righting Jeff Lindgren back down to the Minors. In a corresponding move, the team called up Daniel Castano to the Major League roster. Let's look at these moves and see if this will improve the team...
The Miami Marlins made changes to the bullpen.
The Miami Marlins demoted previously designated for assignment right handed relief pitcher Jeff Lindgren down to AAA Jacksonville. Lindgren didn't have the most impressive track record in the Minor Leagues prior to his call-up to the Majors. In 2019, he had a 1.27 ERA with 8.3 K/9 and 2.2 BB/9 in 16 games and 28.1 innings pitched. He did this at the A+ and A- levels. At the time, it certainly looked like as if The Fish could be developing a useful reliever. In 2021 however, he produced a 3.82 ERA with 7.2 K/9 and 2.6 BB/9 in 20 games (19 starts) and 106 innings at the AA level. This attempt to turn him into a starter was clearly not working out very well.
In 2022, Jeff Lindgren pitched at the AA and AAA levels, and produced a 4.21 ERA with 7.6 K/9 and 3.5 BB/9 in 27 games (all starts) and 136.2 innings pitched. It seemed to be another failed attempt at trying him out as a starting pitcher. The Miami Marlins called him up as a relief pitcher this season, and he produced a 7.20 ERA with 0 strikeouts and 3 walks in 1 game and 5 innings pitched. He was designated for assignment, but wasn't claimed by anyone and so was demoted to the Minors.
Daniel Castano is a left-handed relief pitcher who debuted with the Miami Marlins in 2020 and produced a 3.03 ERA/4.81 FIP with 3.6 K/9 and 3.3 BB/9 in 7 games (6 starts) and 29.2 innings pitched. The following season in 2021, he produced a 4.87 ERA/5.14 FIP with 5.8 K/9 and 3.5 BB/9 in 5 games (4 starts) and 20.1 innings pitched. Finally in 2022, he produced a 4.04 ERA/4.74 FIP with 5.0 K/9 and 2.3 BB/9 in 10 games (7 starts) and 35.2 innings pitched. He isn't very promising, but perhaps he has another level to reach.