SEASON  ESTABLISHED HIT  CHALLENGER          OUTCOME
      
      1950-51 Your Show of     The Frank Sinatra   Old Blue Eyes flops vs.
              Shows (NBC)      Show (CBS)          No. 3 Sid Caesar
      
      1963-64 Bonanza (NBC)    The Judy Garland    Legendary singer fails
                               Show (CBS)          against No.2-rated Western
      
      1967-68 Bonanza (NBC)    The Smothers Bros.  Comedians, at No. 18,
                                Comedy Hour (CBS)  drop Cartwrights to 6
      
      1972-73 The Flip Wilson  The Waltons (CBS)   Comic dips from No. 2
               Show (NBC)                          to 12 with John Boy at 20
      
      1984-85  Magnum, P.I.     The Cosby Show     Cos soars to No. 3 as
               (CBS)            (NBC)              Magnum slides from 6 to 15
      
      DATA: MUSEUM OF TELEVISION AND RADIO, TOTAL TELEVISION
      
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