Iran Press/ Europe: In the final, it took less than five minutes before Fedor Zemskov drew first blood for the host team.
That turned out to be the only goal of the first period in a cagey affair.
However, two seconds after the referee had blown his whistle to begin the second period Japan had leveled it up through a stunning finish from Takuya Akaguma.
The RFU regained its lead seconds later though as Yury Krasheninnikov scored from a free-kick shortly after kickoff.
Another free-kick goal for the neutral team, this time from Andrei Novikov, gave the RFU a two-goal cushion.
Again, the Japanese pegged them back but again the RFU scored, making it 4-2 going into the final period.
The RFU team was focused on preserving its lead and did just that, shutting out the opposition, before Krasheninnikov completed his brace to seal the game for the hosts.
Switzerland also pipped Senegal to the bronze medal following an absolute goal-fest which ended 9-7 at the Luzhniki Beach Soccer Stadium.
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