 However, he received a year-long ban from competition soon after, lasting from June 2005 to 2006, after he failed an in-competition drugs test for the banned stimulant ephedrine.Upon his return to competition, he took the senior national title and won the 20 km walk silver medal at the 2006 European Athletics Championships.Borchin formed part of a Russian medal sweep at the 2007 European Athletics U23 Championships, taking the gold medal and he competed at the 2007 World Championships in Athletics later that year, but did not manage to finish the race.