Darren Dietrich's defensive numbers at 2B are not that bad. Are they good? No. But they are terrible. In 2016, the year he played his most games at 2B (75), he actually had a positive defensive rating according to Fangraphs and Baseball-Reference. He had -3 Defensive Runs Saved. You could live with that kind of defense. You don't want the guy in the OF. He's terrible there. Between OF, 3B and 2B, Dietrich's best position appears to be 2B. However, that's not saying a lot. He's never going to be good - but with some quality positioning, perhaps he'd be palatable if he could hit for an .800+ OPS. However, he's probably a a left handed bat in a platoon, which is not ideal. I haven't seen the Dietrich much - and he's barely played 2B the last two years - so I'm just going by what I read. If the club thinks they could work with him, he might be an interesting option. As noted by others, he really hits better outside of Marlins park. .816 OPS outside of Miami vs a .696 OPS in Miami.