^Some eleven-a-side matches played from 1772 to 1863 have been rated "first-class" by certain sources.[1] However, the term only came into common use around 1864, whenoverarm bowling was legalised. It was formally defined as a standard by a meeting atLord's, in May 1894, ofMarylebone Cricket Club (MCC) and thecounty clubs which were then competing in theCounty Championship. The ruling was effective from the beginning of the1895 season, but pre-1895 matches of the same standard have noofficial definition of status because the ruling is not retrospective.[2] Matches of a similar standard since the beginning of the 1864 season are generally considered to have anunofficial first-class status.[3] Pre-1864 matches which are included inthe ACS' "Important Match Guide" may generally be regarded as important or, at least, historically significant.[4] For further information, seeFirst-class cricket.
