"Today I would like to pay a heartfelt tribute to legend, friend, mentor and father Emanuel Steward. Today would have been my friend's 80th birthday.
I am very grateful for everything you have done for me and for boxing in general. You were a fiery individual with an impeccable work ethic. I was fortunate to be one of the 41 champions you trained during your incredible career. We have come a long way, winning titles and belts all over the world.
R.I.P. Coach, I promise to keep my left hand up and keep punching until we meet again. Love you man!", Klitschko wrote on Instagram.
Emanuel Stewart passed away in October 2012 at the age of 69. The cause of death was cancer.