Chip Ganassi Racing with Felix Sabates announced Wednesday that its development driver Sage Karam will join Scott Pruett in the driver lineup of the No. 01 Telcel Ford EcoBoost Prototype for Friday’s TUDOR United SportsCar Championship Brickyard Grand Prix at Indianapolis Motor Speedway. The driver lineup changes after regular co-driver Memo Rojas couldn’t compete this weekend due to a nagging back issue.

“I couldn’t have been happier to get the call to come drive again with the team in the No. 01 car in Indianapolis,” said Karam. “It’s an unfortunate situation for Memo, and I hope he recovers quickly, but I’m happy to step up and contribute any way I can. I have such great memories of competing at IMS already in the Indianapolis 500 this year with the team, so it almost feels like going home a bit. I know it’s a completely different track, but I feel comfortable there, and I’m hoping I can carry that over into a great result this weekend.”

The reigning Indy Lights champion, 2011 Star Mazda Rookie of the Year and 2010 USF2000 champion, Karam returns to CGRFS after making his debut with the team and his first start in a sports car at the Rolex 24 at Daytona. He raced again with the team in Round 2 at the 12 Hours of Sebring, and most recently in the Sahlen’s Six Hours of the Glen. Karam also led the team’s four-car Indianapolis 500 effort in his very first Verizon IndyCar Series start with a ninth-place result at IMS in May.

Rojas said he was confident he would be ready to return to action for the next round of the TUDOR Championship at Road America.

“I spoke to the team after our last race at Mosport and let them know that I didn’t feel that I was 100 percent,” he said. “I discussed the situation with our managing director Mike Hull and we agreed that it would be best for me to rest my back this weekend. I know Sage will do a great job filling in and I’m already looking forward to the race at Road America after a few weekends off.”