Italy's Roberto Cammarelle reacts after receiving his silver medal during the presentation ceremony for the Men's Super Heavy (+91kg) boxing competition at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT OLYMPICS BOXING) 

Britain's Anthony Joshua (L) celebrates after he was declared the winner over Italy's Roberto Cammarelle following their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING TPX IMAGES OF THE DAY)

Britain's Anthony Joshua celebrates after he was declared the winner over Italy's Roberto Cammarelle following their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING TPX IMAGES OF THE DAY)

Gold medallist Anthony Joshua of Britain (2nd from L) poses with silver medallist Roberto Cammarelle of Italy (L) and bronze medallists Ivan Dychko of Kazakhstan and Magomedrasul Medzhidov of Azerbaijan (R) during the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Gold medallist Anthony Joshua of Britain (C) poses with silver medallist Roberto Cammarelle of Italy (L) and bronze medallists Ivan Dychko of Kazakhstan during the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Silver medallist Roberto Cammarelle of Italy poses during the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Gold medallist Anthony Joshua of Britain (2nd from R) arrives with silver medallist Roberto Cammarelle of Italy (front) and bronze medallists Ivan Dychko of Kazakhstan and Magomedrasul Medzhidov of Azerbaijan (L) for the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Gold medallist Anthony Joshua of Britain (R) arrives with silver medallist Roberto Cammarelle of Italy (front) and bronze medallists Ivan Dychko of Kazakhstan and Magomedrasul Medzhidov of Azerbaijan (L) for the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Gold medallist Anthony Joshua of Britain (2nd from L) poses with silver medallist Roberto Cammarelle of Italy (L) and bronze medallists Ivan Dychko of Kazakhstan and Magomedrasul Medzhidov of Azerbaijan (R) during the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Gold medallist Anthony Joshua of Britain (R) shakes hands with silver medallist Roberto Cammarelle of Italy during the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Gold medallist Anthony Joshua of Britain (2nd from L) poses with silver medallist Roberto Cammarelle of Italy (L) and bronze medallists Ivan Dychko of Kazakhstan and Magomedrasul Medzhidov of Azerbaijan (R) during the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Gold medallist Anthony Joshua of Britain celebrates as he poses with silver medallist Roberto Cammarelle of Italy (L) and bronze medallists Ivan Dychko of Kazakhstan and Magomedrasul Medzhidov of Azerbaijan (R) during the presentation ceremony for the Men's Super Heavy (+91kg) boxing at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua greets spectators as he departs the ring after being declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua is declared the winner over Italy's Roberto Cammarelle (R) after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua greets spectators as he departs the ring after being declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua is declared the winner over Italy's Roberto Cammarelle (rear) after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING) 

Britain's Anthony Joshua greets spectators as he departs the ring after being declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua greets spectators as he departs the ring after being declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua celebrates as he departs the ring after he was declared the winner over Italy's Roberto Cammarelle following their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua (L) celebrates after he was declared the winner over Italy's Roberto Cammarelle following their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua celebrates as he departs the ring after he was declared the winner over Italy's Roberto Cammarelle following their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua (L) is declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua (L) is declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua greets spectators as he departs the ring after being declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua celebrates after he was declared the winner over Italy's Roberto Cammarelle following their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua (R) celebrates after he declared the winner over Italy's Roberto Cammarelle, who is consoled by his trainers, after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua is declared the winner over Italy's Roberto Cammarelle (rear) after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua is declared the winner over Italy's Roberto Cammarelle (R) after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua (L) is declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua (L) is declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua greets spectators as he departs the ring after being declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua celebrates at the end of his Men's Super Heavy (+91kg) gold medal boxing match against Italy's Roberto Cammarelle at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Britain's Anthony Joshua celebrates after being declared the winner over Italy's Roberto Cammarelle after their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Italy's Roberto Cammarelle (R) fights Britain's Anthony Joshua during their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Italy's Roberto Cammarelle (R) fights Britain's Anthony Joshua during their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Italy's Roberto Cammarelle (R) fights Britain's Anthony Joshua during their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Italy's Roberto Cammarelle (R) fights Britain's Anthony Joshua during their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Italy's Roberto Cammarelle (R) fights Britain's Anthony Joshua during their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT BOXING)

Italy's Roberto Cammarelle (R) fights Britain's Anthony Joshua during their Men's Super Heavy (+91kg) gold medal boxing match at the London Olympics August 12, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT BOXING)

A trainer celebrates as Italy's Roberto Cammarelle is declared the winner over Azerbaijan's Magomedrasul Medzhidov (R) after their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Italy's Roberto Cammarelle leaves the ring after he was declared the winner over Azerbaijan's Magomedrasul Medzhidov (not shown) following their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Italy's Roberto Cammarelle (R) leaves the ring after he was declared the winner over Azerbaijan's Magomedrasul Medzhidov (not shown) following their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Italy's Roberto Cammarelle celebrates after he was declared the winner over Azerbaijan's Magomedrasul Medzhidov (not shown) in their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov gives a thumbs down after Italy's Roberto Cammarelle (R) was declared the winner of their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT BOXING OLYMPICS TPX IMAGES OF THE DAY)

Italy's Roberto Cammarelle is declared the winner over Azerbaijan's Magomedrasul Medzhidov (R) after their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov (rear) fights Italy's Roberto Cammarelle during their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov (R) fights Italy's Roberto Cammarelle during their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov gives a thumbs down after Italy's Roberto Cammarelle was declared the winner of their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

A trainer celebrates as Italy's Roberto Cammarelle is declared the winner over Azerbaijan's Magomedrasul Medzhidov (R) after their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

A trainer celebrates as Italy's Roberto Cammarelle is declared the winner over Azerbaijan's Magomedrasul Medzhidov (not shown) after their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov (R) celebrates as Italy's Roberto Cammarelle embraces his trainers after their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov (R) fights Italy's Roberto Cammarelle during their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov (R) fights Italy's Roberto Cammarelle during their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov arrives for his Men's Super Heavy (+91kg) semi-final boxing match against Italy's Roberto Cammarelle at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Azerbaijan's Magomedrasul Medzhidov (L) fights Italy's Roberto Cammarelle during their Men's Super Heavy (+91kg) semi-final boxing match at the London Olympic Games August 10, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Morocco's Mohammed Arjaoui reacts after Italy's Roberto Cammarelle (not shown) was declared the winner of their quarterfinal Men's Super Heavy (+91kg) boxing match at the London Olympic Games August 6, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS TPX IMAGES OF THE DAY)

Morocco's Mohammed Arjaoui (L) fights Italy's Roberto Cammarelle during their quarterfinal Men's Super Heavy (+91kg) boxing match at the London Olympic Games August 6, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Italy's Roberto Cammarelle (L) is declared the winner over Mohammed Arjaoui of Morocco after their quarterfinal Men's Super Heavy (+91kg) boxing match at the London Olympic Games August 6, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Italy's Roberto Cammarelle is declared the winner over Mohammed Arjaoui of Morocco (R) after their quarterfinal Men's Super Heavy (+91kg) boxing match at the London Olympic Games August 6, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)

Italy's Roberto Cammarelle enters the ring for his quarterfinal Men's Super Heavy (+91kg) boxing match against Morocco's Mohammed Arjaoui at the London Olympic Games August 6, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)