As mentioned above. Ken Griffey Jr. Peyton manning. Eli Manning even getting close if he hasnt already. Barry Bonds. Clay Matthews is well on his way. Cal Ripken Jr. All I could think of off the top of my head.:deal
If you ever have to pull a dictionary out to support your argument you automatically loose. :good And you know what I meant by 'Legacy', so stop being a know it all.
Roy Jones Jr. I am not sure it is rare. Many fighters come from fighting families. Oscar Delahoya was better than his father also.
Many fighters have better boxing careers than their fathers. A lot of great fighters entered the sport because of their fathers. But usually when a fighter is a great fighter, or a very good ne, and has a son that enters the sport, the son isn't very good.