September 1978 - Muhammad Ali beat Leon Spinks to win the Heavyweight Championship of .
Anthony Joshua bt Charles Martin (IBF World Heavyweight Championship, - Anthony Joshua wins first world belt by knocking out unbeaten American Martin. Win moves Joshua to and career record.
Hard work: Ali (in won the World Heavyweight Championship three times over the course of his career, a record that still stands
A file picture taken 22 November 1986 in Las Vegas shows Mike Tyson (L) during his fight against heavyweight champion Trevor Berbick to become the youngest heavyweight world champion in history.