Seattle Slew
In 2014, Seattle Slew's great-great grandson, California Chrome, won the Kentucky Derby and the Preakness. California Chrome was the second Kentucky Derby winner in a row who was a sire-line descendant of Seattle Slew, following Orb in 2013. California Chrome's bid for the Triple Crown was defeated by another great-grandson of Seattle Slew, Tonalist, by Tapit. Tapit also sired the winners of the 2016 and 2017 Belmont Stakes, Creator and Tapwrit respectively.