Phelps challenges former sponsor Speedo with new brand

By Liana B. Baker NEW YORK (Reuters) - For the first time in his career, Michael Phelps is preparing for an Olympics without the support of longtime sponsor Speedo, and is instead wearing a suit designed by Aqua Sphere, a virtual unknown in swim racing that is making its Games debut at Rio de Janeiro next year. Phelps has helped Aqua Sphere design a range of products in his name, called "MP", with the initials to adorn the suit, goggles and cap he will wear at Rio should he qualify for the U.S.