BROWNSBURG, Ind. (August 1, 2017) – Rahal Letterman Lanigan Racing (RLLR) announced today that Fifth Third Bank will be the primary sponsor for the No. 15 Honda driven by Graham Rahal in the Bommarito Automotive Group 500 at Gateway Motorsports Park on August 26. It is their second Indy car event as primary sponsor after holding the role for Oriol Servia’s No. 16 entry for the Chevrolet Detroit Grand Prix Duals. Fifth Third Bank is in its second year as an associate sponsor for the team and extended their partnership for three more years in May 2017.