William Obea Moore (born January 10, 1979) is a former American sprinter. Particularly excelling in the 400 metres, Moore held the World Youth Best in this event for nearly 24 years. He was expected to be the next great American quarter miler, to follow Michael Johnson as Olympic champion, but never lived up to the expectations. Starting as an eight-year-old, running for the Los Angeles Jets youth club under coach James Robertson, Moore went on to set American youth records in the Bantam (9–10), the Midget (11–12), the Youth (13–14), and the Intermediate division (15–16)—some of which are still standing—, adding the 200 metres record in the Intermediate division, and was part of the 4 × 400 metres relay team in the Youth division. Moore ran for John Muir High School in Pasadena, California, though his mother arranged for him to continue to run under Robinson. His freshman year, his team won the CIF California State Meet 4x400 relay. In 1995, his sophomore year, Moore won the 400, beating future World Champion, Tyree Washington by a half a second. He was also second in the 200 and again anchored his team to winning the relay in remarkable come from behind fashion. Later in the season, he represented the United States at the 1995 Pan American Junior Athletics Championships in Santiago, Chile, where he set the still standing World Youth Best in the 400 metres at 45.14. And the following year Moore won both the 400, 200 and anchored the relay to the state meet record. At major relay events around the country, including the Penn Relays, Moore became a trackside legend as one of the best, a high school junior being clocked doing 45 second laps. He was Track and Field News "High School Athlete of the Year" in 1996. With high expectations of having a chance to be the first high school athlete to qualify for the Olympics since Dwayne Evans and Lam Jones in 1976, Moore qualified for the 1996 U.S. Olympic Trials. Those dreams were dashed by a 7th place finish in the semi-finals. Later in 1996, Moore won the World Junior Championships in Sydney, Australia under cool conditions. Moore expected many better things to come. Moore looked at 1997, his senior year of high school, as the chance to set records out of sight. Instead, he suffered a minor injury early in the season. Still focused