Many great sportsmen help others, the truly great ones do not need to tell others how great they are though, class will shine through.

I always revert to the words of max Ehrmann's Desiderata:-

"Avoid loud and aggressive persons,
they are vexations to the spirit.
If you compare yourself with others,
you may become vain and bitter;
for always there will be greater and lesser persons than yourself.
Enjoy your achievements as well as your plans."

Mind, the prettiest boxer that ever lived was also the "Greatest"