If you only scrape the surface of Brian Matusz's 2015 season with the Orioles, his performance looks a lot like this was his best season yet. In this, his third season pitching out of the bullpen, Matusz posted his lowest ERA yet, held opponents to the lowest batting average they've ever had against him, and on top of that, posted a strikeout rate higher than anything else he's done in his career.
All of those numbers sound like good things. They are good things. The problem for Matusz lies with just about everything else.