Russian Premier League leaders CSKA Moscow have had their run of five consecutive wins ended with a goalless draw at rivals Dynamo Moscow.
The stalemate has seen Leonid Slutsky's side extend their lead at the top of the standings to six points.
Meanwhile, the draw has kept Dan Petrescu's team in fifth place with six games left to play this season.
Dynamo have now taken four points off CSKA during the current campaign following their 2-0 victory back in September.