Arkady Rotenberg Rotenberg was born in 1951 in Leningrad, where his father, Roman, worked in management at the Red Dawn telephone factory, allowing the family to avoid living in a communal apartment. Rotenberg is of Jewish ancestry. In 1963, when he was age twelve, Rotenberg and Vladimir Putin both joined Anatoly Rakhlin's sambo club. In 1978, Rotenberg graduated from the Lesgaft National State University of Physical Education, Sport and Health and became a judo trainer. After Putin returned to Russia in 1990, Rotenberg trained with him several times a week. During the 1990s, Rotenberg and his brother, Boris, who had moved to
Sparring Former Ultimate Fighting Championship fighter Jamie Varner came to an early retirement because he had a lot of head trauma in full contact sparring. UFC former welterweight champions Robbie Lawler and Johny Hendricks don't do full contact sparring. Sparring has different names and different forms in various schools. Some schools prefer not to call it sparring, as they feel it differs in kind from what is normally called sparring. Sparring Sparring is a form of training common to many combat sports. Although the precise form varies, it is essentially relatively 'free-form' fighting, with enough rules, customs, or agreements to make