U20 WJC Silver Medal
Played for the Chicago Young Americans of the MWEHL where he posted 9 goals and 38 points in 35 games. Was selected in the 2nd round, 31st overall by CSKA in the KHL Draft. Was also selected by Val-d'Or of the QMJHL in the 2ns round, 72nd overall, of the CHL Import Draft.
Posted 5 goals and 27 points in 64 games in his rookie season for Val-d'Or. Appeared for the Detroit Red Wings at the 2011 Traverse City Prospect Tournament.
Posted 7 goals and 20 points in 46 games for Val-d'Or. Appeared for Russia in 1 game of the 2012 Subway Super Series against the QMJHL All-Stars. Won Silver for Team Russia at the U20 World Junior Championships while paired with Zakhar Arzamastsev on Russia's top pairing. Sergeev posted 1 goal and 2 points in the tournament. Was unranked by NHL Central Scouting and undrafted in the 2012 NHL Entry Draft, making Sergeev an unrestricted free agent. Signed by the Tampa Bay Lightning on July 1, 2012.
"A wild card in more ways than one because he’s so slick and so Russian at times and so very ordinary at others. His skills are clearly there and he’s mobile, very well-built and he’s smart but after a year playing with the Val-d’Or Foreurs, Igor Larionov’s client needs to learn more English and French, feel a little more comfortable doing his own thing and hopefully showing some grit during the prospect tournament." (The Malik Report/Kukla's Corner)
Mobile and skilled stickhandler and passer. Has the coveted booming right-handed point shot. Not big in stature, but strong with low center of gravity. Positionally well schooled in his defensive third.
Statistical production in the QMJHL does not match physical talents. Prone to disappear for long stretches. Not overly physical, and more of stick-in-the-lane type defender. The "Russian factor" makes him a potential flight risk to the KHL.
#5/#6 2-way defenseman in the NHL or top-4 defenseman in the KHL