An exciting game came off on the 11th inst. between the [Miami and Liberty] clubs, for the junior championship, which resulted in the defeated of the latter by a score of 23 to 16 runs. The members of the Miami B.B. Club claim the junior championship of St. Louis. Challenges may be directed to Mr. Cannon's grocery, on Seventh, between O'Fallon street and Cass avenue.-Missouri Republican, July 13, 1869
The Miami Club is new to me. The Liberty Club dates back to the Civil War and I have a specific mention of a senior club in 1865, so the junior club may date back that far.