Sergei Ovchinnikov, Russian footballer and manager
Sergei Ivanovich Ovchinnikov (Russian: Серге́й Ива́нович Овчи́нников, IPA: [sʲɪrˈɡʲej ɪˈvanəvʲɪtɕ ɐfˈtɕinʲːɪkəf]; born 10 November 1970 in Moscow) or Boss is a manager and former association football goalkeeper who played for the Russian national team.
Concerning his club career, he is most famous for being a part of Lokomotiv Moscow squad for more than 10 years.
Ovchinnikov was also employed as the head coach of FC Dynamo Bryansk in the Russian First Division.