Worst Endings Career In Boxing History!

Boxing is a great sport and during its long history it gave us boxers whose fights made our hearts beating harder, but time relentlessly goes to the moment for a boxer to leave the ring. Some boxers can recognize this moment, the others realize it through painful defeats that do not embellish their legendary careers.
Today we are going to consider five fights, in which the legendary boxers suffered crushing defeats and realized that they should forget about entering the ring again.