Russia's high-octane Group A clash with co-hosts Poland on Tuesday could prove to be decisive in whether the Russians reach the quarter-finals said their impressive forward Alexander Kerzhakov.
"The match with Poland may be the decisive game for a place in the knockout stage," he said.
"We all are in an upbeat mood after the opening win but now we have to forget about the match with the Czech Republic and prepare for the match with Poland the best possible way.
"I know it will be a really tough match. Poland are playing on their home turf in front of their home crowd, while the result of their match with Greece could hardly satisfy them.
"Naturally, they now desperately need to win to make it to the quarter-finals.
But we also will play for the win on Tuesday to secure top spot," he added.