Larry Jones has been a looming presence on the backside of Pimlico Race Course during the week leading up to the May 19 137th Preakness Stakes.

A largely built man wearing a long-sleeve T-shirt with his nickname "Thumper" emblazoned on the front and cowboy boots with "Thumper" stitched up the back, Jones cruises the barn area in a red golf cart, watching horses come and go.

Jones (not related to the trainer of the same name) has a specialty niche within the horse industry. He provides chiropractic services to help horses with back issues, which he says is a large number of the equine population.

Among his clients is trainer Doug O’Neill, who is sending out Kentucky Derby Presented by Yum! Brands winner I’ll Have Another in the Preakness. Jones is justifiably proud of his role within the success of the Derby winner, but also is ready to provide his services to any horse that he deems is suffering unnecessarily