Mizuno has signed the American freestyle swimmer Blake Pieroni to his first professional contract. The contract also marks the first sponsorship of a swimmer for Mizuno USA. Pieroni, who is 23 years old, is a current member of USA Swimming, the sport's national team. In 2016, he won an Olympic gold medal in Rio for his heat in the 4×100 meter freestyle relay. Pieroni will wear Mizuno GX-Sonic tech suit and swim gear, as well as other Mizuno apparel and training footwear. As part of the deal, he will also advise the brand in the development and enhancement of Mizuno's swimming products.