The left hook had been the favorite punch of Rocky Balboa, not to mention many great, real-life boxers, too.
It's a beautiful thing, if done right. The timing, accuracy and speed of a left hook can combine to produce a key knockdown or a brutal knockout—it can be a boxer's best friend.
Orthodox fighters often use it as a lead hook, while southpaws love to set up that powerful left hook to finish an opponent off.
If a list was to be compiled, who would register the five greatest left hooks of all time? No two lists would look the same, to be sure.
Even so, here is what I came up with. The list starts at the top and goes down.