Comparison of American football and rugby union possession of the ball at their own 20-yard (25 yard line in College Football) line. An important difference between the two sports involves the aftermath of a score. In American football, the scoring team kicks off, except after a safety. In rugby union, the team conceding the score kicks off (in rugby sevens, a variant of rugby union featuring seven players per side, the scoring team kicks off). An American football team consists of an offensive unit, a defensive unit and a "special teams" unit (involved in kicking and kick returns). Only eleven players can be on the field at
William Cunningham (American football) David Molk. In 1955, Cunningham was named to the all-time Medical All-American Team, composed of former All-American football players who later became doctors. The list was compiled and published by "Spectrum," a medical journal. At that time, Cunningham was retired and living in Grove City, Pennsylvania. He died in 1957 at the age of 84. In 2005, Cunningham was selected as one of the 100 greatest Michigan football players of all time by the "Motown Sports Revival," ranking 30th on the all-time team. William Cunningham (American football) William Ralph Cunningham (July 13, 1872 – September 1957) was an All-American football