There is always co-credit thru history for these kind of things. There will be credit given to the person who invented it and seperate credit for the person who tweaked it to what it is today. If mayweather teaches his kids how to box and changes it up he'll get the credit of making it what it is today and his father will get credit for coming up with it in the first place. With the case of floyd currently, Senior gets credit of invention while roger gets credit for making it what it is now.