Zenit St. Petersburg taught Torpedo Moscow a harsh lesson about the reality of life in the Russian Premier League by thrashing the newcomers 8-1 at the Petrovsky Stadium.
Torpedo suffered a 4-1 defeat across the capital at CSKA Moscow on the opening day but Andre Villas-Boas' Zenit had more sinister plans for the side that won the promotion play-off last season.
Igor Smolnikov (26), Jose Salomon Rondon (33) and Hulk (36 penalty) made it a first half to forget for Moscow and there was more to come after the break.
Rondon (47) and Hulk (54) converted braces before Oleg Shatov (62) and substitute Aleksandr Kerzhakov (72 pen and 78) completed the rout.
Dmitri Aidov scored a consolation goal from the penalty spot with four minutes remaining but it was far too little, too late.
The result keeps Zenit in a share of the lead with CSKA, who were 1-0 winners at Mordovia Saransk thanks to a 79th-minute penalty from Seydou Doumbia. Terek Grozny are third in the table after a 1-1 draw with Rubin Kazan.
Ailton opened the scoring on 58 minutes but Sardar Azmoun earned Rubin their first point with an equaliser three minutes from time.