Career
He is a multiple-time medalist at the World and European Championships, and is currently a top-ranked male modern pentathlete in the world by the Union Internationale de Pentathlon Moderne (UIPM). Lesun started out his sporting career as a swimmer, until he began with modern pentathlon at the very young age. In late 2009, Lesun moved to Russia from Belarus, and obtained a dual citizenship and a Russian passport.
He also added his first ever gold medal at the 2010 World Cup in Budapest, Hungary.
In 2012, Lesun emerged as Russia"s best medal prospect, and a top favorite to dominate the nation"s victory streak at his first Olympics. Following his triumph, Lesun qualified for the 2012 Summer Olympics in London, along with Moiseev, to compete in the men"s event, which included a first-ever combined running and shooting segment.
During the competition, Lesun made a strong showing in the fencing segment, tying in second place with China"s Cao Zhongrong for a score of twenty-five victories, but struggled to maintain his position in the entire event, with disappointing scores in freestyle swimming and horse riding.