Queensland Cup rugby league forward James Ackerman was illegally tackled by Francis Molo so forcefully he suffered a rare brain injury only seen in car crash victims.
Ackerman was running at the North Devils' defence after a kick-off when Molo struck him with his shoulder.
The 25-year-old died in hospital two days later from a tear to a major artery in his skull.
Forensic pathologist Rohan Samarasinghe told the Brisbane Coroners Court today he had only seen Ackerman's brain injury two other times during his 20 year career, both in car crash victims.
Dr Samarasinghe said the tear to the internal carotid artery was most likely caused by a direct hit but could have also resulted from indirect trauma like whiplash.