CSKA Moscow moved five points clear at the Russian Premier League summit with a 3-0 win over Amkar Perm while second-placed Anzhi Makhachkala was held to a 0-0 home draw by Rostov.
Big-spending Anzhi Makhachkala, meanwhile, lost ground in the race for top spot as it failed to break down 12th-placed Rostov.
In the day's other game, Kuban Krasnodar was a comfortable 3-0 winner at bottom-of-the-table Mordovia Saransk and climbed to sixth position as a result.
Russian Premier League
AC Milan vice-president