eddie robinson like demayo was freaky built teen and strong as hell,shawn ray had the genetics of great shape and full muscle as a teen yes aside from the early usage,shane dimora from a teen to pro standpoint turned pro at 19!!!!!had great arms and ripped,legs,he could have been good,i think he was done by 21.franco santoriello was also good at 20/22 yrs old,back in 80's early 90's lot of 'kids"20/24 were becoming pros,today its mid and late 30's and masters classes added to turn pro.vince taylor was a 80's guy that turned pro at 32/33 i think,but had longer career than all of them that turned pro young.