The Mets are a top 10 defense according to the Fielding Bible, although our backup catcher is responsible for a fair chunk of that. The only noticeable negatives (at least last time I checked) are Alvarez (he's had trouble staying healthy, but I think DHing consistently against lefties will keep him in the lineup and help his bat and glove in the long run), Soto (we read the fine print when we bought him), and Semien (umm, yeah, that kind of flies in the face of why we supposedly got him in the first place).