Yeah he just gets called "AJ" as far as I know. Would be cool if he actually had a boxing type nickname though. AJ sounds like something your friends might call you, not so much a nickname you get through boxing but each to their own I guess.
Now I think about it though I'm not sure what he could have! Perhaps AJ will work for now
Yeah, he is always introduced as "AJ Anthony Joshua" so AJ it is.
Golovkin just uses his initials as a nickname, same thing with Joshua.
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