Michael Lewis Webster (March 18, 1952 – September 24, 2002) was an American football player who played as a center in the National Football League (NFL) from 1974 to 1990 with the Pittsburgh Steelers and Kansas City Chiefs. He is a member of the Pro Football Hall of Fame, class of 1997. Nicknamed "Iron Mike", Webster anchored the Steelers' offensive line during much of their run of four Super Bowl victories from 1974 to 1979 and is considered by some as one of the best centers in NFL history.Webster was the first former NFL player diagnosed with chronic traumatic encephalopathy (CTE). Since his death, he has become a symbol for head injuries in the NFL and the ongoing debate over player safety. His doctors were of the opinion that multiple concussions during his career damaged his frontal lobe, which caused cognitive dysfunction.Webster died at the age of 50 of a heart attack.