Rahal’s team won the race in 2020 with Takuma Sato, and Bobby’s son Graham Rahal showed frontrunning pace in 2021.
But three of the squad’s quartet of cars failed to make the top 30 places in Saturday’s qualifying, so Graham Rahal, Christian Lundgaard and Jack Harvey will face a last-chance qualifier session later today against Dale Coyne Racing’s rookie Sting Ray Robb.
Its fourth entry for Katherine Legge is guaranteed to start the race in 30th next Sunday.
“Naturally, I feel bad for the drivers,” Rahal Sr told NBC Peacock. “The crew has been working very hard and there’s just something we’re missing here.
“We’ve made some improvements today, and two of our cars are going to be in at the end of the day, but we’d like to get all three in.
“We need to find some more pace, Graham had too much understeer on his first run with this set-up, so that cost some speed. We’ll just keep at it.”
Source: Autosport