[JLange]

Great research! I have a similar list of guys who played only a single game for Cleveland, although I'm not done researching what other teams they may have played for. The most interesting thing to me in a list like this is how few of these players are depicted on a baseball card wearing the uniform of your chosen team. When you only play 1 game its often quite difficult to find a card or even photo of such players at all, let alone with their 1-gamer team. Of the 80 or so players in my list, I am only aware of 10 players having cards depicting them with the Indians, or 12.5% of these players. For comparison, 43.5% of all players who played for the Indians in their first decade 1901-1910 have a card depicting that person with the team.

I am guessing your percentage of one-gamer Yankees who have a card depicting that person as a Yankee would be similarly low.