By BBC Sport user Bengulnaci
Sugar Ray Robinson was, for me, the greatest fighter.
Ability, speed, power, toughness he had it all.
Fighting at different weights and against some great boxers too, he took on and beat almost every rival.
He would also have won the light heavyweight title if the heat had not KO'd his attempt to beat Joey Maxim.
In an era when the ranking system allowed for only one champion, Ray ruled supreme.
Anyone who knows boxing knows the names he fought and the fact of the matter is he had an outstanding record against all of them.
He had traumatic moments in fights, but came through - a true test of greatness. Couple this with his chin, power, speed and skills and you really can't look any further.
Ali is my favourite fighter of all time for similar reasons to those which elevate Ray Robinson.
His skills, technique, toughness and will-to-win match Ray's.
Khaosai Galaxy and Ricardo Lopez deserve to be included because of their outstanding title reigns
But I do feel that because Ali campaigned at heavyweight only, his opposition, although excellent, was more limited because it was only in one division.
Further down my list, Ezzard Charles was a smooth fighter and a very dangerous one.
Khaosai Galaxy and Ricardo Lopez deserve to be included because of their outstanding title reigns and the length of time they remained top of the divisions.