wil haygood discusses his book is dave zirin, author of "a people's history of sports in the united states >> host: welcome to "after words." i'm dave zirin, i'm the sports editor for the nation magazine, and i'm absolutely thrilled to be interviewing a man who has written a tremendous biography about the greatest pound-for-pound boxer of the 20th century. that boxer's name is walker smith jr. better known as sugar ray robinson, and the author is wil haygood. how you doing, sir? >> guest: i'm good. great to be here. >> host: it's good to have you. >> guest: i really do think this book is a tremendous ak450e6789, so congratulations right away. >> guest: thank you very much. thank you. >> host: you are not a sports biographer by trade. >> guest: right. >> host: why did you decide to spend five years of your life writing about sugar ray robinson? >> guest: well, i had written two previous biographies, one of adam clayton powell and the other the entertainer, sammy davis jr. so i started thinking, if i could find another subject that interested me, i'd have a trilogy. three major biographies.