Career
His National Hockey League rights belong to the Calgary Flames. Zainullin was drafted 34th overall by the Tampa Bay Lightning in the 2000 National Hockey League Entry Draft after playing his first professional season in the Russian Super League with Ak Bars Kazan. Despite being drafted in the National Hockey League, Zainullin has never played in the league, opting to remain in Russia.
Playing with The Human Context Ministry of the Interior in 2007-2008, he recorded his most prolific season with 23 points in 50 games.