An energetic and probing Russia overpowered Saudi Arabia en-route to a spectacular 5-0 victory at Luzhniki Stadium, with rising star Aleksandr Golovin at the heart of the home teams best moves.
In a match-up of two predominantly domestically-based squads that play on different continents, with opening game jitters to take into account, even the Russian media stuck a cautious tone in advance.
But the home side in red immediately opened as the more enterprising group, ratcheting up the tempo against a Saudi Arabia that looked vulnerable at the back, though not without technical quality going forward.
The first goal came after 12 minutes from a neat header by unheralded 28-year-old Yuri Gazinsky, and came from a pinpoint cross from Golovin, the CSKA Moscow midfielder, who has been linked with a host of top English Premier League clubs.
Creative fulcrum Alan Dzagoev, who has often suffered misfortune around big tournaments had to go off after just 20 minutes with a suspected hamstring injury, to be replaced by Villareals Denis Cheryshev.
Cheryshev doubled Russias lead 20 minutes later with a skill that left two Saudi players on the ground, and an emphatic left-foot shot into the roof of the net.
Saudi A attempted to rally in the second half, but Russia again looked the more penetrating team, with Golovin reprising his cross for another calm headed finish from substitute Artyom Dzyuba to secure the win, to the instant relief of embattled coach Stanislav Cherchesov.
Cheryshev turned a win into a thrashing with a stunning outside-of-the-foot shot in the dying moments, and Golovin once again stole the headlines with a trademark free kick with the last touch of the game.