How many Stakes/Group winners did the Thoroughbred racehorse Nijinsky sire?

Nijinsky (21 February 1967 – 15 April 1992), usually known in the United States as Nijinsky II, was a Canadian-bred, Irish-trained Thoroughbred racehorse and sire. He was the outstanding two-year-old in Europe in 1969 when he was unbeaten in five races.

In the following season, he became the first horse for thirty-five years to win the English Triple Crown, a feat that had not been repeated as of 2021. He is regarded by many experts to have been the greatest flat racehorse in Europe during the 20th century.

Having been sent to stand at stud in the United States, he was registered there as Nijinsky II. Nijinsky sired 155 Stakes/Group winners ranging over the full range of distances at which he excelled as a racehorse, and is the only sire to have a winner of the Kentucky and Epsom Derbies in the same year.

In 1986 Ferdinand won the Kentucky Derby and Shahrastani won the Epsom Derby and the Irish Derby.