Old Fashioned sustained a non-displaced slab fracture of his right knee during his second-place effort in the $1 million Arkansas Derby at Oaklawn Park on April 11 and will miss the Kentucky Derby.

Trainer Larry Jones said the injury was not life-threatening and was unlikely to give the horse any long-term pain, but that it could end Old Fashioned’s career. He is to go to Rood and Riddle Equine Hospital in Lexington, Ky., on April 13, the Daily Racing Form reported.

“It’s not life-threatening, it should be okay,” Jones said. “Career-ending is a possibility just because of the type of horse he is. But we’ll see. We’ll let them make that call.”

After four straight wins to begin his career, including a victory at Oaklawn in the Southwest Stakes to begin his 3-year-old campaign, the onetime future book favorite for the May 2 Derby ran second in both the Rebel and Arkansas Derby. The son of Unbridled’s Song lost the Arkansas Derby by a half-length in a determined stretch duel with Papa Clem