Sri Lanka opener Dimuth Karunaratne was hit by a bouncing delivery on his helmet and was taken off the field at Manuka Oval on a stretcher on the second day of the test match against Australia.
Karunaratne crumpled to the ground after ducking into a Pat Cummins bouncer which rocketed into the back of his helmet after tea on the second day Saturday.
The 30-year-old Karunaratne, who retired hurt on 46, left the ground on a motorized stretcher. He was later shown on television being taken by ambulance to a hospital.
He appeared to be conscious, although medical staff appeared concerned about his neck.