Friend of the VORG Doug Kern alerted me to the following:
OFFICIAL: #Rays call up left-handed reliever @CJRief, whose 12-letter last name ties Jason Isringhausen for longest in club history.
That @CJRief is C.J. Riefenhauser, and he (and Doug) inspired this list. Here is each franchise/team in baseball history, with the player(s) holding the record for longest last name. For simplicity sake, the player will be listed next to most if not all versions of the franchise, even if they didn’t play for a particular version. For example, Al Hollingsworth didn’t play for the Minnesota Twins, but he DID play for their progenitor, the Washington Senators. Also, the last name length excludes periods, apostrophes, hyphens and spaces. With that in mind, here is the list: