Catcher Ronaldo Hernández is something of an undercover mystery. He has spent time on major league rosters in his nearly decade-long professional career, but he has yet to actually make his MLB debut.
Hernández, who the Red Sox signed to a minor league deal on Thursday but was last seen in a major league organization with the Yankees, has already spent three seasons with the Sox. In 2021, the Rays shipped him up to Boston alongside Nick Sogard in exchange for Jeffrey Springs, Chris Mazza, and cash considerations, and he spent some time in Double-A Portland that year before being promoted to Triple-A Worcester.