Beterbiev is widely regarded as the best pound-for-pound fighter on the planet. He is the first boxer to become the undisputed light-heavyweight champion since Roy Jones Jr. last held that distinction in 2002, and is the first to do so in the "four-belt" era.
As an amateur, Beterbiev won a light-heavyweight silver medal at the 2007 World Championships, gold at the 2008 World Cup and 2009 World Championships, as well as gold at the 2006 and 2010 European Championships. He also reached the heavyweight quarter-finals at the 2012 Olympics.
He is particularly known for his exceptional punching power, having won the first 20 of his 21 professional fights by knockout or stoppage since debuting in 2013. 

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