Spartak Moscow saw their winning streak in the Russian Premier League come to an end as they were held to a 2-2 draw by Kuban Krasnodar on Sunday.
Spartak joined Rostov at the top of the table with ten points from four matches, two ahead of champions CSKA Moscow, who are third after a 0-0 draw at Rubin Kazan.
Nigeria striker Emmanuel Emenike headed Spartak in front in the 30th minute, but Kuban, playing their first match under new Romanian manager Dorinel Munteanu, levelled in the 66th minute through Senegalese substitute Ibrahima Balde's 22-yard effort.
The hosts, cheered on by a 30,000 crowd, pressed forward and four minutes later Brazilian defender Xandao put them ahead, tapping in the rebound after Spartak 'keeper Sergei Pesiakov had parried Balde's close-range header from a corner.
But Spartak's Armenian forward Yura Movsisyan equalised 15 minutes from time with a powerful 27-metre shot.
"We were closer to the win tonight as we looked better and created more scoring chances," Munteanu said. "But the draw looked to be the logical result.
"In general I feel positive about my team's performance but I believe we can play much better."
Meanwhile, CSKA Moscow moved into third place with eight points from their four matches after being unable to break the deadlock against Rubin Kazan.
"Our attack was unimpressive today, making too many mistakes as Rubin are a very well-disciplined team and it's extremely hard to overcome their defensive line, especially on their home ground," CSKA manager Leonid Slutsky said.
"It was really hot here in Kazan and both teams' players got tired in the late stages. But the match wasn't dull as all the players battled to the very end."