Olympic and world 400 metres champion LaShawn Merritt has failed three doping tests for a banned substance and accepted a provisional suspension, his lawyer said on Thursday.
The world's fastest man was officially charged by the U.S. Anti-Doping Agency of committing a doping offence.
Jamaican sprinter Veronica Campbell-Brown has been cleared to resume her career by the Court of Arbitration for Sport (CAS), her American-based lawyer Howard Jacobs said on Monday.