Nike began its five-year deal as the apparel and equipment provider to the University of Arkansas, replacing Adidas.
The Nike deal was originally reached in November.
The contract with Nike covers all 19 sports, but will not include all equipment immediately because of pre-existing contracts. Footballs, basketballs, and bats and equipment for softball will continue to be provided by Wilson. Easton will provide baseball with bats, camp T-shirts and accessories, and baseball hats will be provided by The Game.
