"Golovkin, you know, something's wrong with him...I talk to a lot of guys that actually been in there with him sparring...he spars with bigger guys and he still hurting them...I guess he just got dense bones or something...he don't have no muscle for real...I don't know,"
Berto doesn't think GGG is unproven
Berto doesn't think GGG is unproven

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