Lokomotiv Born in
Moscow of
Volga Tatar descent, Izmailov emerged through local
FC Lokomotiv Moscow's youth ranks, making a lightning progression in a period of six months. He was already a very important first-team member when Lokomotiv won the
Russian Premier League titles in
2002 and
2004, and the player received the 2001 award for
Best Young Player. However, early on, he also often suffered with injuries. On 24 October 2001, Izmailov was one of the players who helped crush
R.S.C. Anderlecht in
Brussels, for
the season's
UEFA Champions League (5–1).
Sporting In July 2007, Izmailov was loaned for one season to
Sporting CP, making his official debut in the
Supertaça Cândido de Oliveira on 11 August, against
FC Porto in
Leiria. The game ended 1–0, with the game's only goal being scored by him at the 75th minute, with a long-distance effort; he also played that match with an injury. On 6 October 2007, coming
from the bench, Izmailov contributed with two late goals (his first league ones) in a 3–0 home win against
Vitória de Guimarães, and eventually helped the side
finish second in the
Primeira Liga,
adding the
Taça de Portugal also against Porto. During the following summer he signed a permanent deal with the
Lisbon-based club, which paid Lokomotiv
€4.5 million. In
2009–10, Izmailov's physical problems resurfaced, and he would spend more than three months in the sidelines with a knee condition. He returned to training following coach
Paulo Bento's dismissal, in late November 2009, but spent most of the following years on the sidelines nursing the same injury, and quarreling with Sporting's board of directors over the issue.
Porto in a July 2013 friendly On 7 January 2013, after passing the pertinent medicals, Izmailov joined Porto on a two-and-a-half-year contract, with
Miguel Lopes moving in the opposite direction. He changed his jersey name from Izmailov to Izmaylov, and scored in only his second match, helping to a 2–0 home win over
F.C. Paços de Ferreira. On 31 January 2014, after spending four months in his country due to family reasons, Izmailov signed for
Gabala FK in the
Azerbaijan Premier League on loan until the end of
the season, rejoining former Lokomotiv coach
Yuri Semin who he worked with nine years ago. On 16 July he returned to his homeland and signed on loan for
FC Krasnodar, which had the option of making the move permanent at the end of
the campaign. Izmailov scored his first goal in
Russian football in seven years on 14 August 2014, netting his team's first in a 4–0 home win against
FC Spartak Moscow. He left Porto at the end of his contract, in July 2015.
Krasnodar On 20 July 2016, after one year out of football, 33-year-old Izmailov signed a one-year contract with Krasnodar with an extension option. On 15 March 2017, he and club parted ways by mutual consent.
Ararat Moscow On 9 June 2017, Izmailov joined
Russian Professional Football League club
FC Ararat Moscow, where he shared teams with fellow former internationals
Roman Pavlyuchenko and
Aleksei Rebko. On 26 September, his contract was dissolved by mutual consent. ==International career==