Former U.S. sprint champion Tyson Gay is working with world renowned sprint coach John Smith, Gay's agent, Mark Wetmore, confirmed to ESPN.com on Friday.
Gay received a one-year ban in 2013 after testing positive for a banned substance and was stripped of his 2012 Olympic silver medal from the 4x100-meter relay in London.
The new coaching move comes before the start of the 2015 outdoor track season, during which Gay could compete at the U.S. Outdoor Track and Field Championships in June for a spot on the national team that would represent the United States at the IAAF World Championships in August.
Smith has coached other Olympic track stars, including Ryan Bailey, Ato Boldon, Carmelita Jeter and Jason Richardson.
Gay cooperated with the U.S. Anti-Doping Agency's investigation into his positive test and received a shortened suspension. His ban ended on June 22, 2014, and he returned to competition at a Diamond League meeting in Lausanne, Switzerland, on July 3.
Gay owns three World Championship gold medals in the 100, 200 and 4x100-meter relay from the 2007 World Championships.