On Tuesday night, ABC?s revival of the sitcom 'Roseanne' lost its first battle in primetime viewers since the show's premiere in March. Though ?Roseanne? slipped in ratings among adults 18-49, it still won its time slot against competitors in that key demo. In the 18-49 group, 'Roseanne's' ratings were down approximately 26 percent since airing its last original episode on April 17.