Clubs: PFC CSK Moskva, FC Torpedo-ZIL Moskva, FC Istra, FC Vidnoye, FC Saturn Moskavskaya Oblast, FC Rubin Kazan, FC Khimki, FC Zenit
• Shirkov started out with PFC CSKA Moskva but made his Russian Premier-Liga debut in 2001 for city rivals FC Torpedo-ZIL Moskva before spending the next three years in the lower leagues, with FC Istra and FC Vidnoye.
• Rejoined the elite in 2005 with FC Saturn Moskavskaya Oblast, scoring three goals in 18 appearances, then had a short spell at FC Rubin Kazan in 2006 before enjoying a breakthrough 2007 season with Khimki, for whom he scored seven goals in 27 games – the best tally at the club − as the promoted team finished ninth in the top flight.
• Joined Zenit midway through their triumphant 2007/08 UEFA Cup run; sent off on his second appearance, against Villarreal CF, but started each of the last six matches, culminating in the final against Rangers FC at the City of Manchester Stadium.
• Transformed from a midfielder to a central defender by Zenit coach Advocaat, he went to UEFA EURO 2008 with Russia in the latter role but was discarded after an opening 4-1 defeat by Spain.
• Restored to the team − now under Advocaat's tutelage − after a two-year absence and scored the winner in the Dutchman's first game, an August 2010 friendly in St Petersburg against Bulgaria, followed by the decisive strike in a 3-2 defeat of the Republic of Ireland in UEFA EURO 2012 qualifying.
• Claimed the Russian double with Zenit in 2010, scoring six goals in the league and the winner, from the penalty spot, in the cup final against FC Sibir Novosibirsk.
• Inspirational in Zenit's run to the knockout stage of the 2011/12 UEFA Champions League, scoring four of his five goals against FC Porto (3-1) and SL Benfica (3-2) either side of the new year.
UEFA Cup: winner 2008
UEFA Super Cup: winner 2008
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