2009-10: A product of the Dynamo Moscow youth hockey program, Artem Sergeev played for the Chicago Young Americans U18 midget major team. He scored 9 goals with 29 assists and had 68 penalty minutes in 35 games. He was selected by Val-d'Or in the second round (72nd overall) in the 2010 CHL Import Draft.
2010-11: Sergeev played in 64 games for Val-d'Or in his first season in the QMJHL. He was the leading scorer amongst Foreurs defensemen with 5 goals and 22 assists and was minus-13 with 40 penalty minutes. Val'd'Or won just 25 games but reached the playoffs after finishing fifth in the West Division. Sergeev had 1 assist and was minus-five in the four-game series with the powerful Quebec Remparts.
2011-12: Sergeev played for Detroit's prospect team in the Traverse City Tournament before returning to Val-d'Or for a second season. He played 46 games for the Foreurs and represented Russia in the 2012 U20 World Junior Championship. He scored 7 goals with 13 assists and was minus-16 with 46 penalty minutes for the Foreurs, who finished under .500 but were second in the West Division. Sergeev had no points and 9 penalty minutes in three playoff games. In seven games for silver medal-winning Russia at the WJC he was plus-one with 1 goal and 1 assist. Sergeev signed a three-year, entry-level contract with the Lightning in July, 2012.
2012-13: Sergeev made his pro hockey debut in an April game with Tampa Bay's AHL affiliate in Syracuse following his third season with the QMJHL's Val d'Or Foreurs and played for host Russia in the 2013 World Junior Championship. He had no points nor penalty minutes and was -2 in his only AHL game. The Crunch finished first in the East Division and reached the AHL Finals against Calder Cup champion Grand Rapids. Sergeev did not play in any playoff games. He was the second-leading scorer amongst Val d'Or defensemen, trailing only Guillaume Geilinas. Sergeev scored 6 goals with 33 assists in 55 games and was +20 with 65 penalty minutes. The Foreurs finished fourth in the West Division and reached the second round. Sergeev scored 3 goals with 3 assist and was +3 with 12 penalty minutes in ten playoff games. In seven games at the WJC in Ufa he had 2 assists and was +3. Russia defeated Canada in overtime in the bronze medal game.
An underrated blue liner at the junior level, Sergeev's talents attracted some big league attention. Like many Russians, he's a great skater with a level of mobility so smooth that his on-ice effort is sometimes called into question. Solid defensively with great positioning, he equally adept at making a safe first pass out of the zone or carrying the puck out himself. Though not particularly physical, he has good size and overall, his potential is very intriguing.