Ruben Contreras brain surgery
It's no surprise that boxing carries the highest risk of serious injury than other other sport. Ruben Contreras found this out in his match against Brian Viloria at Staples Center on May 28, 2005.
Ruben Contreras ended up stopping the fight himself in the sixth round when he was bleeding from the nose and mouth. Only after the fight was it discovered he had a brain problem when he had a seizure.
Ruben Contreras was put into a medial coma and then had an operation to relieve pressure on his brain.
Ruben Contreras his record and history of fights wouldn't lead you to believe he's susceptible to this injury.