Katherine Hamilton during a 1981 hurdles race when she was a sophomore at Berkeley. Later that year, Hamilton quit the team and walked away from her sport, largely because of the prevalence of performance-enhancing drugs at the top levels of track and field. Courtesy of Martha Edwards hide caption

itoggle caption Courtesy of Martha Edwards

Pittsburgh Pirates players celebrate after scoring against the St. Louis Cardinals on Wednesday. It was a rare win for the team with the worst record in baseball this year. Jared Wickerham/Getty Images hide caption

itoggle caption Jared Wickerham/Getty Images