Leizer came to the exhibition with his parents Pavel and Anastasia and his younger brother Roman.
The winner was awarded a certificate to attend a friendly football match between the Russian and Serbian national teams, which will take place in Moscow on March 21.
The teenager himself has been playing football since he was four years old.
Earlier, Russian President Vladimir Putin noted the role of the Russia exhibition-forum in promoting traditional values.
It was also reported that Deputy Mayor of Moscow Maxim Liksutov spoke about the upcoming performances of the artists of the “Music in the Metro” project at the international exhibition and forum “Russia”.