For those wondering, I've just implemented some new anti-spam registration thingies, so the problem should go away if they are registering via a script.
Ultimate pitcher: 0.00 era, 27 k/9ip, 0.00 WHIP, pitches every inning of every game, 1.000 fielding percentage (unnecessary as he strikes out every batter he faces). Oh, and this is an NL team so he also hits 75 home runs and bats at a .450 level.
Honestly, if Manny wants to avoid being hassled in Boston, he just needs to put on a dirty trenchcoat and talk to himself while walking down the street. EVERYONE will think he's homeless.