South African welterweight boxer Brian Baronet is listed in critical condition at St. Austine's Hospital after a 10th-round knockdown by American Kenny Vice, doctors said Wednesday.Baronet injured his back in an automobile accident four days before the Tuesday night contest but was pronounced fit for the fight.

"He remains critically ill, he may not survive," a spokesman for St. Augustine's Hospital said.

Neurosurgeons operated early Wednesday to stem bleeding from the boxer's brain.