Bored at work, so I decided to compile this list of what WS champs did after winning it all:
1904 BOS: 95-59 (AL pennant; Giants refused to play them)
1906 NYG: 96-56 (2nd place)
1907 CWS: 87-64 (3rd place)
1908 CHC: 99-55 (repeated as champs)
1909 CHC: 104-49 (2nd place)
1910 PIT: 86-67 (3rd place)
1911 PHA: 101-50 (repeated as champs)
1912 PHA: 90-62 (3rd place)
1913 BOS: 79-71 (4th place)
1914 PHA: 99-53 (AL pennant; lost to Braves)
1915 BOB: 83-69 (2nd place)
1916 BOS: 91-63 (repeated as champs)
1917 BOS: 90-62 (2nd place)
1918 CWS: 57-67 (6th place; first defending WS champs to finish following year with a losing record)
1919 BOS: 66-71 (6th place)
1920 CIN: 82-71 (3rd place)
1921 CLE: 94-60 (2nd place)
1922 NYG: 93-61 (repeated as champs)
1923 NYG: 95-58 (NL pennant; lost to Yankees)
1924 NYY: 89-63 (2nd place)
1925 WAS: 96-55 (AL pennant; lost to Pirates)
1926 PIT: 84-69 (3rd place)
1927 STL: 92-61 (2nd place)
1928 NYY: 101-53 (repeated as champs)
1929 NYY: 88-66 (2nd place)
1930 PHA: 102-52 (repeated as champs)
1931 PHA: 107-45 (AL pennant; lost to Cardinals)
1932 STL: 72-82 (6th place)
1933 NYY: 91-59 (2nd place)
1934 NYG: 93-60 (2nd place)
1935 STL: 96-58 (2nd place)
1936 DET: 83-71 (2nd place)
1937 NYY: 102-52 (repeated as champs)
1938 NYY: 99-53 (repeated as champs)
1939 NYY: 106-45 (repeated as champs)
1940 NYY: 88-66 (3rd place)
1941 CIN: 88-66 (3rd place)
1942 NYY: 103-51 (AL pennant; lost to Cardinals)
1943 STL: 105-49 (NL pennant; lost to Yankees)
1944 NYY: 83-71 (3rd place)
1945 STL: 95-59 (2nd place)
1946 DET: 92-62 (2nd place)
1947 STL: 89-65 (2nd place)
1948 NYY: 94-60 (2nd place)
1949 CLE: 89-65 (3rd place)
1950 NYY: 98-56 (repeated as champs)
1951 NYY: 98-56 (repeated as champs)
1952 NYY: 95-59 (repeated as champs)
1953 NYY: 99-52 (repeated as champs)
1954 NYY: 103-51 (2nd place)
1955 NYG: 80-74 (3rd place)
1956 BRO: 93-61 (NL pennant; lost to Yankees)
1957 NYY: 98-56 (AL pennant; lost to Braves)
1958 MIB: 92-62 (NL pennant; lost to Yankees)
1959 NYY: 79-75 (3rd place)
1960 LA: 82-72 (4th place)
1961 PIT: 75-79 (6th place)
1962 NYY: 96-66 (repeated as champs)
1963 NYY: 104-57 (AL pennant; lost to Dodgers)
1964 LA: 80-82 (7th place)
1965 STL: 80-81 (7th place)
1966 LA: 95-67 (NL pennant; lost to Orioles)
1967 BAL: 76-85 (7th place)
1968 STL: 97-65 (NL pennant; lost to Tigers)
1969 DET: 90-72 (2nd place AL East)
1970 NYM: 83-79 (3rd place)
1971 BAL: 101-57 (AL pennant; lost to Pirates)
1972 PIT: 96-59 (1st place NL East; lost to Reds in NLCS)
1973 OAK: 94-68 (repeated as champs)
1974 OAK: 90-72 (repeated as champs)
1975 OAK: 98-64 (1st place AL West; lost to Red Sox in ALCS)
1976 CIN: 102-60 (repeated as champs)
1977 CIN: 88-74 (2nd place NL West)
1978 NYY: 100-63 (repeated as champs)
1979 NYY: 89-71 (4th place AL East)
1980 PIT: 83-79 (3rd place NL East)
1981 PHI: 59-48 (1st place overall NL East; lost to Expos in NLDS)
1982 LA: 88-74 (2nd place NL West)
1983 STL: 79-83 (4th place NL East)
1984 BAL: 85-77 (5th place AL East)
1985 DET: 84-77 (3rd place AL East)
1986 KC: 76-86 (3rd place AL West)
1987 NYM: 92-70 (2nd place NL East)
1988 MIN: 91-71 (2nd place AL West)
1989 LA: 77-86 (4th place NL West)
1990 OAK: 103-59 (AL pennant; lost to Reds)
1991 CIN: 74-88 (4th place NL West)
1992 MIN: 90-72 (2nd place AL West)
1993 TOR: 95-67 (repeated as champs)
1994 TOR: 55-60 (3rd place AL East)
1996 ATL: 96-66 (NL pennant; lost to Yankees)
1997 NYY: 96-66 (AL wild card; lost to Indians in ALDS)
1998 FLA: 54-108 (5th place NL East)
1999 NYY: 98-64 (repeated as champs)
2000 NYY: 87-74 (repeated as champs)
2001 NYY: 95-65 (AL pennant; lost to Diamondbacks)
2002 ARI: 98-64 (1st place NL West; lost to Cardinals in NLDS)
2003 ANA: 77-85 (3rd place AL West)
2004 FLA: 83-79 (3rd place NL East)
2005 BOS: 95-67 (AL wild card; lost to White Sox in ALDS)
2006 CWS: 90-72 (3rd place AL Central)
2007 STL: 78-87 (3rd place NL Central)
Thanks to Chisox73 for pointing out the error.
1904 BOS: 95-59 (AL pennant; Giants refused to play them)
1906 NYG: 96-56 (2nd place)
1907 CWS: 87-64 (3rd place)
1908 CHC: 99-55 (repeated as champs)
1909 CHC: 104-49 (2nd place)
1910 PIT: 86-67 (3rd place)
1911 PHA: 101-50 (repeated as champs)
1912 PHA: 90-62 (3rd place)
1913 BOS: 79-71 (4th place)
1914 PHA: 99-53 (AL pennant; lost to Braves)
1915 BOB: 83-69 (2nd place)
1916 BOS: 91-63 (repeated as champs)
1917 BOS: 90-62 (2nd place)
1918 CWS: 57-67 (6th place; first defending WS champs to finish following year with a losing record)
1919 BOS: 66-71 (6th place)
1920 CIN: 82-71 (3rd place)
1921 CLE: 94-60 (2nd place)
1922 NYG: 93-61 (repeated as champs)
1923 NYG: 95-58 (NL pennant; lost to Yankees)
1924 NYY: 89-63 (2nd place)
1925 WAS: 96-55 (AL pennant; lost to Pirates)
1926 PIT: 84-69 (3rd place)
1927 STL: 92-61 (2nd place)
1928 NYY: 101-53 (repeated as champs)
1929 NYY: 88-66 (2nd place)
1930 PHA: 102-52 (repeated as champs)
1931 PHA: 107-45 (AL pennant; lost to Cardinals)
1932 STL: 72-82 (6th place)
1933 NYY: 91-59 (2nd place)
1934 NYG: 93-60 (2nd place)
1935 STL: 96-58 (2nd place)
1936 DET: 83-71 (2nd place)
1937 NYY: 102-52 (repeated as champs)
1938 NYY: 99-53 (repeated as champs)
1939 NYY: 106-45 (repeated as champs)
1940 NYY: 88-66 (3rd place)
1941 CIN: 88-66 (3rd place)
1942 NYY: 103-51 (AL pennant; lost to Cardinals)
1943 STL: 105-49 (NL pennant; lost to Yankees)
1944 NYY: 83-71 (3rd place)
1945 STL: 95-59 (2nd place)
1946 DET: 92-62 (2nd place)
1947 STL: 89-65 (2nd place)
1948 NYY: 94-60 (2nd place)
1949 CLE: 89-65 (3rd place)
1950 NYY: 98-56 (repeated as champs)
1951 NYY: 98-56 (repeated as champs)
1952 NYY: 95-59 (repeated as champs)
1953 NYY: 99-52 (repeated as champs)
1954 NYY: 103-51 (2nd place)
1955 NYG: 80-74 (3rd place)
1956 BRO: 93-61 (NL pennant; lost to Yankees)
1957 NYY: 98-56 (AL pennant; lost to Braves)
1958 MIB: 92-62 (NL pennant; lost to Yankees)
1959 NYY: 79-75 (3rd place)
1960 LA: 82-72 (4th place)
1961 PIT: 75-79 (6th place)
1962 NYY: 96-66 (repeated as champs)
1963 NYY: 104-57 (AL pennant; lost to Dodgers)
1964 LA: 80-82 (7th place)
1965 STL: 80-81 (7th place)
1966 LA: 95-67 (NL pennant; lost to Orioles)
1967 BAL: 76-85 (7th place)
1968 STL: 97-65 (NL pennant; lost to Tigers)
1969 DET: 90-72 (2nd place AL East)
1970 NYM: 83-79 (3rd place)
1971 BAL: 101-57 (AL pennant; lost to Pirates)
1972 PIT: 96-59 (1st place NL East; lost to Reds in NLCS)
1973 OAK: 94-68 (repeated as champs)
1974 OAK: 90-72 (repeated as champs)
1975 OAK: 98-64 (1st place AL West; lost to Red Sox in ALCS)
1976 CIN: 102-60 (repeated as champs)
1977 CIN: 88-74 (2nd place NL West)
1978 NYY: 100-63 (repeated as champs)
1979 NYY: 89-71 (4th place AL East)
1980 PIT: 83-79 (3rd place NL East)
1981 PHI: 59-48 (1st place overall NL East; lost to Expos in NLDS)
1982 LA: 88-74 (2nd place NL West)
1983 STL: 79-83 (4th place NL East)
1984 BAL: 85-77 (5th place AL East)
1985 DET: 84-77 (3rd place AL East)
1986 KC: 76-86 (3rd place AL West)
1987 NYM: 92-70 (2nd place NL East)
1988 MIN: 91-71 (2nd place AL West)
1989 LA: 77-86 (4th place NL West)
1990 OAK: 103-59 (AL pennant; lost to Reds)
1991 CIN: 74-88 (4th place NL West)
1992 MIN: 90-72 (2nd place AL West)
1993 TOR: 95-67 (repeated as champs)
1994 TOR: 55-60 (3rd place AL East)
1996 ATL: 96-66 (NL pennant; lost to Yankees)
1997 NYY: 96-66 (AL wild card; lost to Indians in ALDS)
1998 FLA: 54-108 (5th place NL East)
1999 NYY: 98-64 (repeated as champs)
2000 NYY: 87-74 (repeated as champs)
2001 NYY: 95-65 (AL pennant; lost to Diamondbacks)
2002 ARI: 98-64 (1st place NL West; lost to Cardinals in NLDS)
2003 ANA: 77-85 (3rd place AL West)
2004 FLA: 83-79 (3rd place NL East)
2005 BOS: 95-67 (AL wild card; lost to White Sox in ALDS)
2006 CWS: 90-72 (3rd place AL Central)
2007 STL: 78-87 (3rd place NL Central)
Thanks to Chisox73 for pointing out the error.
Comment