Our perceptions of this are scewed because we notice the sons of famous fathers. We don't notice the fathers of famous sons.

Like, rather sure Roy Jones father was a boxer. We would never know if it wasn't for Jr.

I think ODLHs dad boxed, at least I assume by how badly Oscar was desperate to please him in the ring.

Danny Garcia's dad boxed.

Many fighters we know have fathers that boxed. We just don't know because they weren't exceptional.