Rocky Marciano was the only Heavyweight champion who couldn't be beat.
In all of his forty-nine prizefights, he never once suffered a defeat.
This awesome boxer had heart, stamina and he was strong.
Some people also thought that Mike Tyson couldn't be beat but they were wrong.
Marciano was the the Heavyweight champion for four years.
He had fists of fury and didn't know the meaning of fear.
But sadly something happened that filled people with disgust.
In 1969 he died in a plane crash on the last day of August.
The next day after his death would've been his 46th birthday.
It is never easy to see such a great person pass away.