Biathlon - IBU Biathlon World Cup - Men's 15km Mass Start - Kontiolahti, Finland - March 11, 2018 - Anton Shipulin of Russia reacts. Lehtikuva/Martti Kainulainen via REUTERS/File Photo
MOSCOW (Reuters) - Russian biathlete Anton Shipulin, who won gold at the 2014 Sochi Olympics in the men's 4x7.5 km relay, announced his retirement on Tuesday as Russian biathlon remains under increased scrutiny.
"I have made a very serious decision to end my professional career," Shipulin, who also won bronze in the 4x7.5 km relay at the 2010 Vancouver Games, said at a press conference in Moscow.
