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
Volga Nizhny Novgorod boosted its hopes of Premier League survival with a 2-1 home victory over Rostov.