Stan Fox remained in critical but stable condition Monday after a brain scan found no additional injuries stemming from his crash on the first lap of the Indianapolis 500.

Fox, a veteran sprint car driver, underwent surgery on Sunday at Methodist Hospital to relieve pressure caused by a subdural hematoma, or bleeding in the brain.

Fox, 42, of Janesville, Wis., was injured just seconds into his eighth Indy 500 when his car veered to the right and slammed into a concrete wall, then was cut in half by another car.

Dr. Henry Bock, the speedway’s medical director, said a brain scan Monday morning showed no other injuries. Fox remained unconscious and the next three to five days will be critical in his recovery, Bock said.

No updates on Fox’s condition were expected until this morning, he added.

Fox, who started 11th, apparently ran over the rumble strip along the inside of the track. The car crossed to the outside, hit the wall almost head-on and was T-boned by Eddie Cheever.

The last driver to die in a crash during the race was Swede Savage in 1973. The last driver to die at the speedway was Jovy Marcelo of the Philippines, who was killed in practice in 1992.

Christian Fittipaldi, runner-up to Jacques Villeneuve, was honored as Indianapolis 500 rookie of the year at the Victory Dinner on Monday night.

The nephew of two-time Indy winner Emerson Fittipaldi finished 2.481 seconds behind Villeneuve on Sunday, the best finish among the six rookies in the lineup.