The muffin nine of the Union Base Ball Club challenge any muffin nine of St. Louis to play a match game of base ball for a tin horn or medal. If any muffins answer this challenge, they will please do so as soon as convenient, and name an early day for a contest for the championship, as we may become too strong to be ranked among muffin players.
T.S. Smith, Secretary U.B.B.C.
-Missouri Republican, September 5, 1867
I don't think I've ever seen a challenge muffin game, even one that was tongue-in-cheek like this one, and I'm not sure I've ever seen an "official" muffin club. So I guess this is a bit unique.