High Quality Content by WIKIPEDIA articles! "The System" is the term commonly used to describe the style of play pioneered in Gaelic football by the Donegal senior football team during the 2010s. It is regarded as having caused a revolution in the sport, with establishment counties unable to comprehend it or work out how to deal with it. The System has been used to great effect during the managerial reign of Jim McGuinness, with Donegal smothering traditionally stronger counties to win two Ulster Senior Football Championships and one All-Ireland Senior Football Championship in the space of two years. Donegal`s winning of the 2012 All-Ireland Senior Football Championship is considered "one of the great GAA managerial coups" in history. Prior to this Donegal had had little success in the Championship since 1992. Now they are the "FC Barcelona of Gaelic football"—with Mark McHugh cast as the Lionel Messi of the team. Further comparisons have been made between McGuinness and Oakland Athletics baseball selector Billy Beane`s "Moneyball" tactics, both of which turned traditional also-rans into regular winners by exploiting little-noticed advantages in their respective sports. Admirers of "The System" from other sports include the golfer Paul McGinley and the soccer manager Neil Lennon.