To be a great boxer, certainly great dedication, heart, tenacity, and discipline are necessary internal traits to be successful at any level.
Being a natural athlete with a high tolerance for pain does not hurt, either.
Nevertheless, someone can put all the blood, sweat, and tears they want into the gym and into the ring, but without a great trainer, their ceiling of success is only so high.
This slideshow is to pay tribute to some of the best boxer/trainer combinations on the professional level.
Let us take a look at who made the cut.