11. Maxim Dadashev (2019)
Dadashev was the victim of one of boxing’s most recent tragedies. He was 13-0 and undefeated before he met Subriel Matias in Maryland. Then, he endured the worst adversity of his career. It was an IBF title eliminator and the Russian tried to push through. Finally, his trainer, the legendary Buddy McGirt, threw in the towel to save his fighter but it was too late.

Matias inflicted such a bad beating upon Dadashev that his brain began to swell. An ambulance rushed him to the hospital and an emergency response team placed him in a coma. Sadly, their efforts were in vain because Dadashev didn’t recover. After four days, Dadashev passed away in hospital at the age of 28. Boxing can be a brutal sport and this shocked the world.