Russia, Croatia advance after shootout wins

Akinfeev ensured that, in the 32-year-old captain's 111th game for his country.

Croatia entered the match after impressing in the group stage, including a 3-0 dismantling of two-time champion Argentina at the same stadium. But Denmark, unbeaten in 18 games coming into the game, provided tough opposition.

The Danes took the lead in the first minute when defender Mathias Jorgensen scrambled in a shot that went in off Subasic's left hand and then the left post. It was Denmark's fastest ever World Cup goal.

Croatia equalized in the fourth minute with another untidy goal. Henrik Dalsgaard's clearance hit a teammate and fell for Croatia forward Mario Mandzukic to hook the ball in.

The teams stayed even for the next 116 minutes, including the 30 minutes of extra time.