WASHINGTON (AP) - Retired slugger Mark McGwire Thursday told a congressional panel investigating drugs in baseball that he would not "participate in naming names" of players who used steroids. McGwire did not say in his opening statement to the House Government Reform Committee whether he used steroids. Two current players, Sammy Sosa and Rafael Palmeiro, said they never used steroids. That duo and McGwire were accused of using performance-enhancing drugs by Jose Canseco in a best-selling book that helped prompt the hearing. In a tense scene, Canseco sat at the same table as the other players as he told the...