Career
He participated in 2008 Summer Olympics and 2012 Summer Olympics. At the 2008 Summer Olympics, he competed at welterweight (66 kg). He lost to Mikhail Siamionau in his first match.
At the 2012 Summer Olympics, he moved up in weight class to middleweight (74 kg).
He beat Peter Bacsi in his first match and Robert Rosengren in the quarterfinal before losing to Roman Vlasov in the semi-final. Because the person who beat him reached the final he was entered into the bronze medal repechage.
In 2014 Kazakevič was one of the contestants in Lithuanian version of reality show Celebrity Splash! called Šuolis!.