According to RUSADA, Sample A of Dyatchin’s doping examination as of June 30 this year tested positive for prohibited substances and the athlete was already notified of his temporarily suspension from athletic competitions until further notice.
Dyatchin's alleged abuse of banned substances could be either rejected or confirmed after Sample B results.
Russia’s 31-year-old long-distance swimmer won the 10 km Open Water at the 2003 World Aquatics Championships in Spain’s Barcelona and the 2007 World Aquatics Championships in Australia’s Melbourne.
Dyatchin also won two silver medals at the 2001 World Championship in Japan’s Fukuoka (10 km Open Water) and at the 2011 World Championship in China’s Shanghai (25 km Open Water). He has also grabbed two World Championships’ bronze medals - in 2003 in Barcelona (5 km Open Water) and in 2009 in Italy’s Rome (25 km Open Water).
In 2007, Dyatchin was named by prestigious American-based monthly swimming magazine ‘Swimming World’ as the World’s Open Water Swimmer of the Year.