Mary Lou Retton became the first American woman to win the all-around gold in gymnastics at the 1984 Olympics. Muhammad Ali, struggling with Parkinson's, lit the Olympic cauldron at the 1996 Atlanta Games. Kerri Strug stuck her second vault landing despite an injury to help the U.S. women's gymnastics team win gold in 1996. Michael Phelps won a record eight medals, including six gold, at the 2004 Athens Olympics.