On 16 April 1966 Muhammad Ali signed to make the fourth defence of the title he had won
against Sonny Liston in February 1964, against
Henry Cooper. Cooper had
faced Ali in the bout immediately prior to him becoming the champion and had famously knocked down the American with a trademark left hook at the end of the fourth round, with trainer
Angelo Dundee appearing to possibly pop an ampule of smelling salts under Ali's nose (which would have been a disqualifying offense if he had been caught). The bout was fought at
Arsenal Stadium, where it drew a live audience of 46,000 spectators. The fight held the record for the largest live audience at a British boxing event, up until
Joe Calzaghe vs. Mikkel Kessler drew 55,000 spectators in 2007. It was the first world heavyweight title bout to be held in the
United Kingdom since
Tommy Burns vs.
Jem Roche in March 1908, 58 years earlier. ==The fight==