Sir Sinclair, Keur Photo by Terri Miller Congratulations to Iron Spring Farm’s Sir Sinclair, Keur, who was the USEF #1 Sire of Dressage Horses for an extraordinary fifth consecutive year (2015–2019). Sir’s offspring earned more than 9,800 points in dressage competitions throughout the year, more than 4,000 points ahead of the second place stallion, Contango,