CSKA Moscow moved three points clear, at least temporarily, in the Premier League table with a 2-1 win over bottom club Mordovia Saransk.
CSKA's nearest challenger Anzhi Makhachkala faces third-placed Zenit St Petersburg away from home on Monday evening (Tuesday morning AEDT).
Dinamo Moscow was also a 2-1 winner, away to Terek Grozny.
Russian Premier League
Alexander Bukharov scored the only goal of the game as Anzhi Makhachkala finally secured its first victory of the Premier League season at the 20th attempt against Rubin Kazan.