Wildcat Heir, who ran poorly in the TVG Breeders' Cup Sprint (gr. I), was found to have sustained a hairline fracture of the accessory carpal bone, apparently during the race, and has been retired.The son of Forest Wildcat, bred and owned by Eb Novak, was examined by Dr. William Keegan, who recommended the 5-year-old horse be retired.Plans for stud duties have not been made. He was bred at Novak's New Farm in Florida and is out of the Pentelicus mare Penniless Heiress. He is a full brother to stakes winner Forest Heir and multiple graded stakes winner Forest Heiress."With Wildcat Heir's value at stud, we decided the best thing to do was to retire him," Novak said. "Though he stumbled in the Breeders' Cup and was pulled up shortly after the wire, his injury will not require surgery."Wildcat Heir was bumped at the start of the Sprint and at the finish, stumbled and unseated rider Stewart Elliott. The horse was vanned off.Trained by Ben Perkins Jr., Wildcat Heir won six of 11 starts and earned $424,460. The Breeders' Cup Sprint was only his second start this year. In his other outing, in the Teddy Drone Aug. 7 at Monmouth, he ran six furlongs in a swift 1:08 2/5 and won by 5 3/4 lengths in a race in which the half-mile split was :43 3/5. In his final start at four, he won the De Francis Memorial Dash (gr. I).Wildcat Heir has various ailments that kept him from making more than 11 starts. He had hind leg injuries at two and three, suffered from a foot injury while in Florida, and popped a curb in New Jersey.