Variations in published cricket statistics have come about because there is no official view of the status of cricket matches played in Great Britain prior to 1895 or in the rest of the world prior to 1947. As a result, historians and statisticians have compiled differing lists of matches that they recognise as (unofficially) first-class. The problem is significant where it touches on some of the sport's first-class records, especially in regards to the playing career of W. G. Grace.

William Gilbert Grace was an English amateur cricketer who was important in the development of the sport and is widely considered one of its greatest players. He was nominally amateur as a cricketer, but he is said to have made more money from his cricketing activities than any professional cricketer. He was an extremely competitive player and, although he was one of the most famous men in England, he was also one of the most controversial on account of his gamesmanship and moneymaking.