In June 1996, Johnson was 28 when he ran the 200-m in 19.66 seconds at the U.S. Olympic Trials, breaking Pietro Mennea's record of 19.72 seconds that had stood for nearly 17 years. With that performance he qualified to run at the 1996 Summer Olympics in Atlanta and prepared to attempt to win both the 200 metres and 400 metres events, a feat never before achieved by a male athlete. (Two women have won Olympic gold medals in both races in the same year: Valerie Brisco-Hooks in the 1984 Summer Olympics in Los Angeles, and Marie-José Pérec, in the 1996 Olympics in Atlanta.)