Did you know that cricket cricket 'was stronger in America than in Australia until the 1860s – stronger than anywhere else outside England'?
Or that the first know the earliest reference to baseball comes in a diary entry of an Englishman. Surrey solicitor, William Bray? He refers to playing 'base-ball' with his friends but as Scyld Berry points out the bigger claim that America's summer sport descends from the English game rounders does not 'get to first base'.
More on the relationship between the rival summer games of 'two countries divided by a single language' here.