Sergey Kovalev

Sergey Alexandrovich Kovalev (Kovalyov) is a Russian former professional boxer who competed from 2009 to 2025. He held multiple light-heavyweight world championships, including the WBA (Undisputed) and IBF titles from 2014 to 2016, and the WBO title three times between 2013 and 2019. Nicknamed the "Krusher", Kovalev is particularly known for his exceptional punching power, although he describes himself as "just a regular boxer".