According to a spokeswoman, the driver had been up and walking around after the surgery, but had developed an infection this week. He is expected to make a full recovery.
Foyt expressed his remorse for missing the Rolex, saying, "I feel so bad that I let everyone down."
Meanwhile, Daytona International Speedway President Joie Chitwood III said that the track and everyone involved with the race wishes Foyt a quick recovery.
Foyt is a towering figure in racing circles. He remains the only driver in history to win the Indianapolis 500, the Daytona 500, the 24 Hours of Daytona and the 24 Hours of Le Mans. We wish him a speedy recovery. Click past the break for a quick statement regarding his hospitalization.
DAYTONA BEACH, Fla. Jan. 27, 2012 – Daytona International Speedway officials today announced that 50th Rolex 24 At Daytona Grand Marshal A.J. Foyt has been forced to cancel his trip due to illness.
Foyt issued the following statement: "I am really sorry that I can't be there this weekend for the Rolex 24. I was really looking forward to it because I thought it was a great honor to be asked to be the Grand Marshal of the 50th Anniversary of that race and considered it to be one of the great highlights of my career. I feel so bad that I let everyone down. I was also looking forward to seeing some of my old friends and the race cars that I drove in that race. It was going to be a really fun weekend for me but I guess I'll be watching the race from my hospital room-yep the doctors pulled rank on me. And I hate to admit, but I think they're right-this time. I'd like to wish everyone a safe race and I'll be with you in spirit."
Daytona International Speedway President Joie Chitwood III said, "We wish A.J. a speedy recovery and hope he's back on his feet soon."
Foyt sustained some complications from his recent knee surgery but he is expected to make a full recovery.