A seemingly intrinsic part of the game of baseball is the keeping of statistics on the achievements of the players. Started by Henry Chadwick in the 19th century who devised the concept of batting average based on his experience of cricket. Commonly used statistics are explained here:
... the Shimmy[?], and the Black Bottom[?].
Despite all the scandal the flappers generated, their look became fashionable in a toned-down form among even "respectable" women. ...