Racing ability of broodmares of great horses

[The Indomitable DrugS]

Originally Posted by Linny

Larry Jones told me that he really had hoped to get Hard Spun on the grass. He thought he could be a superstar grass miler.

Wouldn't surprise me. Here was his dam...

[GenuineRisk]

Here's an article from 2004 that looked at racing ability vs. family.

http://www.thoroughbredreview.com/MythoftheFamily.htm

They didn't look at unraced mares, as there's no way of determining their quality on the track, but it's an interesting read.