Euro 2012: Advocaat refuses to let fans' behaviour upset plan
While Russia's football has been beautiful on the pitch, some of their fans have shown an ugly side off it.
Russia tore the Czech Republic apart in their opening Group A match, but the gloss was taken off the 4-1 win following violence by Russian supporters in Wroclaw.
"We concentrate on the game and not outside things," coach Dick Advocaat said, explaining the violence has no bearing on his team.
Russian football authorities have pleaded with fans to make sure there is no repeat of the trouble when Russia play Poland in Warsaw tonight. But there are fears of possible clashes as Russian fans plan to march to the stadium to mark Russia Day, a national holiday.
Poland drew 1-1 with Greece and need to strengthen their defence to keep the slick-passing Russian forward line at bay.
Poland will have to do it with second-string goalkeeper Przemyslaw Tyton after Wojciech Szczesny was sent off in Poland's opener. But Tyton impressed as soon as he came on, saving a penalty.
A win will be enough to secure Russia a quarter-final place with a game to spare.
Poland v Russia
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