Sergiy Vyacheslavovich Derevyanchenko (, born 31 October 1985), is a Ukrainian professional boxer who has challenged three times for world middleweight titles; the IBF title in 2018; the IBF and IBO titles in 2019; and the WBC title in 2020. As an amateur, he won the bronze medal at middleweight at the 2007 World Amateur Boxing Championships. As of February 2021, he is ranked as the world's fourth best active middleweight by the Transnational Boxing Rankings Board, eighth by BoxRec and fourth by The Ring magazine. Amateur career His father was a boxer, who introduced him to the sport. Derevyanchenko trained with his father in his hometown, Feodosiya, until he was 10. At the 2007 AIBA World Boxing Championships, he beat Argenis Casimiro Núñez in the quarter-finals to win a bronze medal, but was unable to progress any further, losing to Matvey Korobov in the semi-final. He participated in the 2008 Summer Olympics but lost to Emilio Correa in the second round. Derevyanchenko took part in the 2009 AIBA World Boxing Championships, where he reached the quarter-finals but fell short against Vijender Singh. Between 2010 and 2014, he took part in the World Series of Boxing, where he became known as one of the best boxers in the competition. He became known for his excellent technique and his handspeed. He competed in 24 bouts, winning 23 of them. His sole loss in this competition came to Brian Castaño in the 2012–13 season quarter-final. Derevyanchenko was a champion twice, in the 2011–12 season with the Milano Thunder, and in the 2012–13 season with the Astana Arlans. Results AIBA World Boxing Championships 2007 Defeated Victor Cotiujanschi (Moldova) 28-12 Defeated Oliver Obradovic (Austria) RSCO 2 Defeated Alexander Rubjuk (Estonia) 23-12 Defeated Argenis Casimiro Núñez (Dominican Republic) RSCO 3 Lost to Matvey Korobov (Russia) AB 2 2009 Defeated Danijel Topalovic (Bosnia) RSC 3 Defeated Alex Theran (Colombia) 13-8 Defeated Adem Kılıççı (Turkey) 13-6 Lost to Vijender Singh (India) 4-12 Olympic Games 2008 (as a middleweight) Defeated Wang Jianzheng (China) 15-6 Lost to Emilio Correa (Cuba) 4-18 Derevyanchenko ended his amateur career with a record of 390–20. Professional career Early career Derevyanchenko turned professional in 2014, signing with promoter Lou DiBella and fighting out of New York City. After winning his first two fights, he signed a deal with manager Al Haymon. Derevyanchenko headlined his first televised card in August 2015, facing off against Elvin