A sprint competitor is a person or company that competes in a race or competition. The five solutions to the crossword for the term 'sprint competitor' are RACER (5 letters), Verizon (7 letters), ATT (3 letters), MCI (3 letters), T-Mobile (7 letters), and MetroPCS (8 letters). RACER is a person who competes in a race, while Verizon, ATT, MCI, T-Mobile, and MetroPCS are all telecommunications companies that provide cellular services and compete against each other in the market.