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Two Olympic champions will collide on Saturday night at Olympic Stadium in Moscow, Russia. WBA/IBO/WBO/IBF heavyweight champion Wladimir Klitschko and undefeated mandatory challenger Alexander Povetkin held open workout sessions in Moscow. The two fighters have been scheduled to fight each other at least twice since 2008 with the match getting canceled both times.

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http://www.boxingscene.com/photos-klitschko-povetkin-open-workouts-moscow–70188