Ali is one of the best fighters of all time. He faced every heavyweight possible in his era of boxing and beat most of them.
It was only when he started to fall into old age that his career started to decline.
At his peak, no one was better than Ali, and he proved it every time out. He left no questions as to who he should have faced, but what if he could have fought against boxers from other decades?
Since today is Ali's birthday, it is worth reminiscing and putting some matches together.
Here are fifteen fights that would be worth testing Ali's skills.