Book excerpt: In Whats My Name, Fool? sports writer Dave Zirin shows how sports express the worst - and at times the most creative, exciting, and political - features of our society. Zirins sharp and insightful commentary on the personalities, politics, and history of American sports is unlike any sports writing being done today. Zirin explores how NBA brawls highlight tensions beyond the arena, how the bold stances taken by sports unions can chart a path for the entire labor movement, and the unexplored political stirrings of a new generation of athletes who are no longer content to just ''play one game at a time.'' Whats My Name, Fool? draws on original interviews with former heavyweight champ George Foreman, Olympic athlete John Carlos, NBA player and anti-death penalty activist Etan Thomas, antiwar womens college hoopster Toni Smith, Olympic Project for Human Rights leader Lee Evans and many others. It also unearths a history of athletes ranging from Jackie Robinson to Muhammad Ali to Billie Jean King, who charted a new course through their athletic ability and their outspoken views.