The article notes that "[d]uring his 27-year Hall of Fame career, Nolan Ryan recorded 324 wins, seven no-hitters and 5,714 strikeouts. A new biography by Rob Goldman, Nolan Ryan: The Making of a Pitcher, includes never-before-told anecdotes and personal recollections."
The incident the article discusses what is now one of baseball's most famous bench-clearing brawls, which got started when Ryan drilled now White-Sox manager Robin Ventura. Ventura, 20 years younger than Ryan, decided that he could charge the mound and take on a middle-aged man whose best days physically and pitchingly were behind him. But Ventura would be just plain old wrong. Indeed, for most of us baseball fans, what transpired next would forever define Ventura and Ryan. Ryan got Ventura in a headlock and proceeded to pound the *&^% out of his face! Indeed, had the rest of teams not jumped in there, poor Ventura might not have had a career to speak off. The article disucsses what led up to that day and how it forever defined Nolan Ryan.
The actual event is below (watch out for Bo Jackson who features in the story):