In June 2008, Johnson voluntarily returned the 4 × 400 m relay gold medal he earned in the 2000 Olympics after Antonio Pettigrew, who ran the second leg, admitted he took performance-enhancing drugs between 1997 and 2001. Pettigrew made his admission while giving testimony in the trial of coach Trevor Graham for his role in the BALCO scandal. On August 2, 2008, the International Olympic Committee stripped the gold medal from the U.S. men's 4x400-metre relay team. Three of the four runners in the event final, including Pettigrew and twins Alvin and Calvin Harrison, and preliminary round runner Jerome Young, all have admitted or tested positive for performance-enhancing drugs. Only Johnson and Angelo Taylor, who also ran in preliminary rounds, were not implicated. Johnson had already returned his medal because, as he said, he felt the medal was not won fairly.