Nolan Ryan

How many are you familiar with the legend that is Nolan Ryan? This dude is a beast, somebody who already looked mean and as the second-inning lead-off hitter for the Royals, Bo Jackson hit Nolan Ryan's first pitch back to the mound, Ryan misplayed it and the baseball hit him in the mouth. He then continued to play the game with blood all over his jersey and it dripping from his mouth. He wasn’t even phased! 

Also, let us not forget he is an 8-time All-Star and has a career strikeout record of 5,714 strikeouts! He is a true legend!