Brazil-born bruiser Viviane Obenauf, 34, is suspected of clobbering her husband to death
Boxer
Another boxer, Russian Maxim Dadashev, died on Tuesday
Turkish producer revealed three of the players in new show
There are evidence of foul play, though...
Fighter portrayed by Robert De Niro in "Raging Bull"
Here are just three of the most impressively valiant stands throughout history