As an amateur, he represented Lithuania at the 2008 and 2012 Olympic Games,[1][2] and won a bronze medal at the 2011 World Championships.

Kavaliauskas participated in 2008 at the Summer Olympics, but lost his first fight to bronze-winning Frenchman Alexis Vastine.

In the finals competition, the athlete suffered a hand injury and won a bronze medal for not finishing the fight.

On 14 December 2019, Kavaliauskas faced WBO welterweight champion Terence Crawford.

[4] In his next bout, Kavaliauskas faced Mikael Zewski, who was ranked #7 by the IBF and the WBO as well as #13 by the WBC.