Conor Daly will replace Jack Harvey in the No. 18 Dale Coyne Racing car for Sunday's IndyCar Series race at Iowa Speedway due to Harvey's severe neck pain. Harvey managed to start Saturday's race but had to retire after 28 laps because of the debilitating pain, which had worsened since the Mid-Ohio race. Daly, who was already on standby, received a 15-minute practice session on Sunday morning. Despite his limited preparation, Daly will start from the back of the grid. Harvey’s decision ensures the team receives full points for participation. Daly has a history of racing at Iowa Speedway, with one top-10 finish in nine starts.