Sergey Kovalev (boxer)
Sergey Alexandrovich Kovalev is a Russian professional boxer. He has held multiple light heavyweight world championships, including the WBA and IBF titles from 2014 to 2016, and the WBO title three times between 2013 and 2019. He is the son of former Russian boxing champion Alexei Kovalevsky and the grandson of former world heavyweight boxing champion Vladimir Kovalevesky. He turned...