Sidorenko played during his long amateur career 310 fights of which he won 290. His first success was winning the World Military Championships in 1995 in the flyweight (-51 kg). After another victory at the Military World Championships in 1997, he won the 1998 in Minsk the European Championship, where he among other things, Agasi Məmmədov suggested. Still in the Same year followed by a third victory at the Military World Championships, the World Championships the following year, however, Sidorenko already retired in the quarterfinals against Valdemar Cucereanu, Romania ( 6:2 ), from. In 2000, he won his second European title in Tampere. In the same year he took on Ukraine at the Olympic Games in Sydney and arrived after victories over the later professional world champion Daniel Ponce de León, Spain ( 16:8 ), the vice world champion Omar Andres Narvaez in 1999, Argentina (16:10 ) and the bronze medalist of the world Championships Rżany Andrzej, Poland ( RSC 3 ), the semi-finals. In this he faced the Thais Wijan Ponlid, whom he defeated with 14:11 points and therefore to retire with a bronze medal.
Sidorenko 2001 reached the final of the World Championships. On the way there he suggested, inter alia, Maikro Romero, Cuba ( 21:20 ), and Georgi Balakschin, Russia ( 25:6 ). In the final he lost to Jerome Thomas, France ( 39:29 ).
In 2001 Sidorenko eventually switched to the pros and was taken by Universum Box-Promotion under contract. He is trained by Michael Timm. On 26 February 2005, he won by one point victory over Mexican Julio Zarate the vacant world title WBA bantamweight, he lost against Anselmo Moreno of Panama on May 31, 2008 after points. On 2 May 2009, there was a rematch against Anselmo Moreno. In this second encounter Sindorenko defeated again on points. After he won in 2010 against Mbwana Matumla and lost to Nonito Donaire, Sidorenko ended his career.
Sidorenko's twin brother Valeri was also a successful amateur boxer, he won, among others, in 2000 the European title in the flyweight, but did not enter the professional camp.