When José Canseco burst into the Major Leagues in the 1980s, he changed the sport--in more ways than one. No player before him possessed his mixture of speed and power. He shattered the mold of the out-of-shape baseball player and ushered in a new era of superathletes who looked like bodybuilders, made outrageous salaries, and enjoyed rock-star lifestyles. And the ticket for this ride? Steroids. Canseco cultivated a secret just about everyone in major league baseball knew about, one that would alter the game and the way we view our heroes forever.