Marion Jones has settled a defamation lawsuit against the man who accused her of using banned substances to help her win five medals at the 2000 Olympics.
Jones did not win a medal at the 2004 Athens Games
Jones and Victor Conte, founder of California drug company Balco, have agreed an out-of-court settlement.
Jones, 30, took action in December 2004 after Conte told US media that he supplied Jones with banned drugs.
The US Anti-Doping Agency has not charged Jones while Conte is serving a four-month prison sentence.
Last October, Conte was convicted of orchestrating a scheme to give athletes undetectable performance-enhancing drugs.
The Balco scandal has involved some of athletics' top names, with British sprinter Dwain Chambers and former world double sprint champion Kelli White both receiving two-year bans.
Jones has struggled for form since the US Anti-Doping Agency began investigating her and missed out on the US team for last year's World Championships.
Last December, Jones' ex-partner and former 100m world record holder Tim Montgomery was suspended for two years for doping violations by the Court of Arbitration for Sport (Cas).
Jones has never failed a dope test but is still being investigated by Cas.