American football is a game played between two teams and consists of 11 players in each of the two teams, with unlimited substitutions. Rugby is best described as a blend of the contact of American football, the running of soccer, and the transition of basketball.
The numbers reflect that. According to league research, there are more than 15 million NFL fans in the U.K., including four million “avid” fans. Sky Sports weekly ratings have doubled during the past decade, and overnight TV viewership, including the league’s RedZone channel, rose 32% during the 2018 season.Oct 25, 2019
The name originated with the sport’s once-characteristic playing field: the original American football and Canadian football fields were marked by a series of parallel lines along both the width and length of the field, which produced a checkerboard pattern resembling a cross-hatched cooking gridiron.