Boris Borisovich Rotenberg Boris Borisovich Rotenberg Boris Borisovich Rotenberg (; born 19 May 1986) is a professional footballer. He plays as a right-back for FC Lokomotiv Moscow. Born in Russia, Rotenberg is an international footballer for Finland. His father, Boris Rotenberg Sr., was listed by Forbes magazine as the 100th wealthiest person in Russia in 2010, with a net worth of US$700m. He has been a friend of the Russian president Vladimir Putin since the 1960s, when they took judo lessons together. His uncle Arkady Rotenberg was the 99th wealthiest in Russia, according to the same list. In July 2008, Boris Rotenberg and
Sparring striking an inappropriate area or stepping out of the ring. Sparring in a grappling art such as judo might begin with the partners holding one another and end if they separate. The organization of sparring matches also varies; if the participants know each other well and are friendly, it may be sufficient for them to simply play, without rules, referee, or timer. If the sparring is between strangers, there is some emotional tension, or if the sparring is being evaluated, it may be appropriate to introduce formal rules and have an experienced martial artist supervise or referee the match. In