Nick Zito himself hates the over breeding and over racing breakdowns. He has said it publicly many times. Check these unraced mares.
Batanoea--most expensive mare ever bred to MOW Cost Jeffords $11,529 in 1920 Haik to Reason line evolved from it.
Bathing Gal unraced bred to MOW produced Crusader 1926 Horse of Yesr
Many of MOW mares never raced.