High Quality Content by WIKIPEDIA articles! Eugene "Mercury" Morris (born January 5, 1947), is a former American football player, nicknamed early on for his mercurial quickness when running with the ball. Morris was a running back and kick returner for 9 years, playing mostly for the Miami Dolphins (at first, in the American Football League, then, in the American Football Conference following the 1969 merger with the NFL). Morris played in three Super Bowls and was selected to three Pro Bowls.