Thoroughbred family 4-r

Zenyatta (foaled April 1, 2004) is a champion American Thoroughbred racehorse who won the Breeders' Cup Classic and Breeders' Cup Distaff and 19 of her 20 starts. She was the 2010 American Horse of the Year, and Champion Older Female in 2008, 2009, and 2010. She was inducted into the National Museum of Racing and Hall of Fame in 2016.

Nearco (January 24, 1935 – June 27, 1957) was an Italian-bred Thoroughbred racehorse described by Thoroughbred Heritage as "one of the greatest racehorses of the Twentieth Century" and "one of the most important sires of the century." He was unbeaten, winning 14 races at distances from 1000m (5 furlongs) to 3000m (1 mile 7 furlongs), including the Derby Italiano and Grand Prix de Paris. He was then sold for a record amount to Martin H. Benson and stood stud in England, where he became the patriarch of several of the most dominant sire lines in Thoroughbred history.