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:
... time of Justinian, he was a Christian and possibly bishop of Croton. In approximately 580, he wrote "De origine actibusque Getarum[?]" (The origin and deeds of the Goths), ...