Tristan Vautier and Rodolfo Gonzalez will suit up for Dale Coyne Racing at this weekend's IndyCar double-header in Detroit.
Vautier was a late-call up for the Indianapolis 500 to drive the team's #18 entry, pictured, after Carlos Huertas was ruled out on medical grounds, and will switch to the #19 for this weekend's races.
Gonzalez, meanwhile, made his series debut with the team at Barber, and will drive the #18 entry.
Both of Coyne's full-time seats have been in a state of flux all season, and the team has used seven different drivers in those two cars over the first eight races.
Meanwhile, the DCR crew member who was injured during last weekend's Indy 500 has been released from hospital.
Daniel Jang, who worked on Vautier's car, suffered an ankle injury when he was hit by the sister car driven by James Davison, which rebounded into Vautier's pit box after being released into the path of the third Coyne entry driven by Pippa Mann.