There are certain icons of sport that are so transcendent, they change their respective sports forever-Jordan, Tiger, Serena. But there is one athlete you've probably never heard of who also belongs in that rarified air, one who can run faster and jump higher than all of them: His name is Spitfire, and he's a 7-year-old Whippet. But what makes Spitfire so special is more than the fact that he has four legs, it's the powerful bond he has with his trainer, a 15-year-old girl named Sydney. Together, they are rewriting the record books of the canine sports world. Mina Kimes brings you their unforgettable story.