Pagenaud has been forced onto the sidelines ever since a heavy crash in practice for the Mid-Ohio round in July, triggered by an apparent brake failure, left him with post-concussion symptoms and curtailed his campaign.
A host of drivers have filled in for the 2019 Indianapolis 500 winner, with former Ed Carpenter Racing driver Conor Daly, MSR's IMSA champion Tom Blomqvist and Indy NXT champion Linus Lundqvist each taking turns at the wheel.
