Jon Drummond, former coach of US sprinter Tyson Gay, has been banned for eight years after arbitrators ruled he possessed, trafficked and administered banned drugs to an athlete he coached.
The US Anti-Doping Agency on Wednesday announced the ban is to begin on December 17.
The ban prohibits the 46-year-old former sprinter from coaching, training or advising athletes and participating or coaching at any event sanctioned by USA Track and Field or the sport's global governing body the International Association of Athletics Federations (IAAF).
"Coaches have an inherent responsibility to protect athletes - not to take advantage of them - but to ensure that they receive the support, training and advice they need to win fairly and in accordance with the rules," USADA chief executive Travis Tygart said in a statement.
Drummond was Gay's coach when Gay was suspended in June 2013 after testing positive for a banned anabolic steroid in two out-of-competition tests.
The former world champion's ban was reduced from two years to one by USADA due to Gay's cooperation, which included information that contributed to the agency's case against Drummond.
US sprinter Marshevet Hooker and Trinidad and Tobago's Kelly-Ann Baptiste, both of whom worked with Drummond, also provided information.
Source: AFP