Question: What current world champion goes to an amateur boxing club that operates from a gym on the Lancaster West Estate that Olympic gold medalist who held the IBF super-middleweight title since 2015, having previously held the British super-middleweight title from 2010 to 2011, and the European super-middleweight title from 2011 to 2012 goes to as well?

full_context: Document 1: Oleksandr Usyk: Oleksandr Oleksandrovych Usyk (Ukrainian: Олекса́ндр Олекса́ндрович У́сик ) is a Ukrainian professional boxer who has held the WBO junior heavyweight title since 2016. As of May 2017 he is ranked as the world's best in the division by "The Ring" magazine, the Transnational Boxing Rankings Board, and BoxRec. As an amateur, Usyk won gold medals at the 2011 World Championships and 2012 Olympics, both in the heavyweight division.
Document 2: Wayne Elcock: Wayne Elcock (born 12 February 1974) is a British former professional boxer. Who was managed by Frank Maloney at the start of his career and promoted by Panix promotions before moving after 2 winning fights to Frank Warren, then later to Mick Hennessy. Elcock was trained in Leicester to begin with by Jez brogan, before moving to London to be trained by both Frank Maloney and Alan Smith, along with several visits to america to build on his skills, where Wayne worked with Goody Petronelli the trainer of former world champions Marvelous Marvin Hagler and Steve Collins at his famous Brockton gym. Wayne came back to his home town to team up with Birmingham's most successful boxing trainers brothers Paddy & Tommy Lynch. Knocking out fellow contender Darren Rhodes in 1 minute 30 seconds in Elcocks homecoming and first ever fight with the Lynch brothers in Birmingham at a sold out Aston Events Centre, this setting up his first attempt at the prestigious British title Lonsdale Belt against Plymouth's Scott Dann (boxer) in the first British title fight to ever be scored by three judges, after defeat Wayne bounced back with two back to back knockout victories one of them a British title eliminator winning by TKO against Scotland's Lawrence Murphy, who was the only other boxer to have beaten Elcock, In Wayne's next contest he faced the English champion Steven Bendall who was to be yet another stopped, but this time over eight punishing rounds and setting up his next contest where he would become the first British boxer to beat long standing British champion Howard Eastman to win the coveted Lonsdale Belt in 2007, Elcock also won the Commonwealth title and the minor WBU World Middleweight title becoming the first Birmingham born fighter to ever hold a version of a World title. Elcock challenged for the IBF middleweight title against the unbeaten World champion Arthur Abraham on 8 December 2007, losing by a fifth round knockout. Wayne bounced back from his world title attempt defending the lonsdale belt with a TKO win against local Dudley rival Darren McDermott, before losing the next defence to fellow Birmingham fighter Matthew Macklin in the Battle of Brum Elcock retired at the age of 36 in 2009 to concentrate fully on his other business matters and today Wayne can be found mentoring in schools and behind the counter at Mad Dog's Boxing shop in Boldmere, Birmingham, as well as coaching in the evening at the multi award winning company Wayne Elcock's Box Clever and at his own amateur boxing club Wayne Elcock's Boxing Academy, located in Chelmsley Wood, not far from where he grew up.
Document 3: James DeGale: James Frederick DeGale, {'1': ", '2': ", '3': ", '4': "} (born 3 February 1986) is a British professional boxer. He has held the IBF super-middleweight title since 2015, having previously held the British super-middleweight title from 2010 to 2011, and the European super-middleweight title from 2011 to 2012. As of May 2017, he is ranked as the world's best super-middleweight by "The Ring" magazine and the Transnational Boxing Rankings Board, and third by BoxRec. As an amateur, DeGale represented Great Britain at the 2008 Olympics, winning a gold medal in the middleweight division. By later becoming IBF champion, he became the first British boxer ever to have won both an Olympic gold medal and a professional world title.
Document 4: James Hare (boxer): James "Roberttown Rocket" Hare ( (1976--) 16 1976 (age (2017)-(1976)-((11)<(07)or(11)==(07)and(30)<(16)) ) ) born in Dewsbury is an English amateur feather/lightweight and professional light welter/welter/light middle/middleweight boxer of the 1990s and 2000s who as an amateur was runner-up for the 1991 Amateur Boxing Association of England (ABAE) Junior Class-A featherweight (57 kg) title, against Daniel Happe (Honor Oak ABC), boxing out of Batley ABC, and won the 1992 Amateur Boxing Association of England (ABAE) Junior Class-B lightweight (60 kg) title, against George Robshaw (Dale Youth), boxing out of Batley and Dewsbury ABC, and as a professional won the European Boxing Union (EBU) European Union (EU) welterweight title, World Boxing Federation (WBF) welterweight title, and Commonwealth welterweight title, and was a challenger for the British Boxing Board of Control (BBBofC) British welterweight title against David Barnes, his professional fighting weight varied from 139 lb , i.e. light welterweight to 155 lb , i.e. middleweight.
Document 5: Anthony Joshua: As of May 2017, Joshua is ranked as the world's best heavyweight by the Transnational Boxing Rankings Board and BoxRec, and second best by "The Ring". His knockout-to-win ratio stands at 100%. Joshua is the second British boxer, after James DeGale, to win both a gold medal at the Olympics and a world title by a major professional sanctioning body, as well as being the first British heavyweight to do so. He is also the second boxer, after Joe Frazier, to win a world heavyweight title whilst still reigning as Olympic champion at the top weight.
Document 6: David Price (boxer): David Price (born 6 July 1983) is a British professional boxer. He held the British, English, and Commonwealth heavyweight titles between 2012 and 2013, and was one of the division's top-rated prospects in the early 2010s. As an amateur he won a bronze medal at the 2008 Olympics, gold at the 2006 Commonwealth Games, and three ABA titles; all in the super-heavyweight division.
Document 7: Garry Delaney: Gary Delaney ( (1970--) 12 1970 (age (2017)-(1970)-((11)<(08)or(11)==(08)and(30)<(12)) ) ) born in Newham is an English professional light heavy/cruiser/heavyweight boxer of the 1990s and 2000s. He won the British Boxing Board of Control (BBBofC) Southern Area light heavyweight title, World Boxing Board (WBB) light heavyweight title, World Boxing Organization (WBO) Inter-Continental light heavyweight title, BBBofC Southern Area cruiserweight title, and Commonwealth light heavyweight title (twice), and was a challenger for the BBBofC British heavyweight title, and Commonwealth heavyweight title against Julius Francis, World Boxing Organization (WBO) Inter-Continental cruiserweight title against John Keeton, and Jesper Kristiansen, BBBofC British cruiserweight title, and Commonwealth (British Empire) cruiserweight title against Bruce Scott, and World Boxing Union cruiserweight title against Sebastiaan Rothmann, and Enzo Maccarinelli, his professional fighting weight varied from 174 lb , i.e. light heavyweight to 231 lb , i.e. heavyweight.
Document 8: Boxing in Liverpool: Boxing in Liverpool, United Kingdom includes approximately 22 amateur boxing clubs which have produced notable boxers such as John Conteh, Andy Holligan, Tony Bellew, and David Price.
Document 9: David Haye: David Deron Haye (born 13 October 1980) is a British professional boxer who has held world titles in two weight classes. He is the first British boxer to reach the final of the World Amateur Boxing Championships, where he won a silver medal in 2001. As a professional he became the first British boxer to become a unified cruiserweight world champion in 2008, winning three of the four major world titles, as well as the "Ring" magazine and lineal titles. In the same year he moved up to heavyweight, and became the WBA champion in 2009 after defeating Nikolai Valuev, who had a world record 9 in height and 99 lb weight advantage on Haye.
Document 10: Dale Youth boxing club: The Dale Youth boxing club is an amateur boxing club that operates from a gym on the Lancaster West Estate. It successfully nutured dozens of champions including the young Olympic gold medal winner James DeGale and current world champion George Groves (boxer).
Document 11: Khalid Yafai: Khalid "Kal" Yafai (Arabic: خالد يافعي‎ ‎ ; born 11 June 1989) is a British professional boxer who has held the WBA super-flyweight title since December 2016. As an amateur, he represented Great Britain at the 2008 Summer Olympics and won a silver medal at the 2010 European Amateur Boxing Championships as a flyweight. As of May 2017, he is ranked as the world's fifth best super-flyweight by BoxRec and the Transnational Boxing Rankings Board, and sixth by "The Ring" magazine.
Document 12: Chris Eubank Jr.: Christopher Livingstone "Chris" Eubank Jr. (born 18 September 1989) is a British professional boxer. He has held the IBO super-middleweight title since February 2017, having previously held the WBA interim and British middleweight titles between 2015 and 2016. As of July 2017, Eubank Jr. is ranked as the world's second best super middleweight by BoxRec, sixth by the Transnational Boxing Rankings Board, and seventh by "The Ring" magazine. He is the son of former two-weight world boxing champion Chris Eubank.
Document 13: George Groves (boxer): George Groves (born 26 March 1988) is a British professional boxer. He has held the WBA (Super) super-middleweight title since May 2017, and previously the European, British, and Commonwealth super-middleweight titles between 2010 and 2014. As an amateur, Groves won the ABA middleweight title twice, in 2007 and 2008.
Document 14: James Obede Toney: James Obede "Hot Ice" Toney ( (1980--) 05 1980 (age (2017)-(1980)-((11)<(08)or(11)==(08)and(30)<(05)) ) ) born in Accra is a Ghanaian professional middle/super middle/light heavy/cruiserweight boxer of the 2000s and 2010s who won the African Boxing Union (ABU) middleweight title, World Boxing Council (WBC) International middleweight title, and Commonwealth middleweight title, and was a challenger for the World Boxing Council (WBC) International middleweight title against Sergey Tatevosyan, and North American Boxing Federation (NABF) super middleweight title, North American Boxing Association (NABA) super middleweight title, and World Boxing Council (WBC) Continental Americas super middleweight title, against Lucian Bute, his professional fighting weight varied from 157 lb , i.e. middleweight to 185 lb , i.e. cruiserweight.
Document 15: Joe Calzaghe: Joseph William Calzaghe, {'1': ", '2': ", '3': ", '4': "} ( ; born 23 March 1972) is a Welsh former professional boxer who competed from 1993 to 2008. He is a two-weight world champion, having held the unified WBA (Super), WBC, IBF, WBO, "Ring" magazine, and lineal super-middleweight titles, as well as the "Ring" light-heavyweight title. Calzaghe is the longest-reigning super-middleweight world champion in boxing history, having held the WBO title for over 10 years and making 21 successful defences before moving up to light-heavyweight. As his super-middleweight and light-heavyweight reigns overlapped, he retired with the longest continual time as world champion of any active fighter.
ground_truth: George Groves