In what year was the spitball banned?
1920
1947
1947
1947
1936
1947
1954
1936
1947
1954
1936
1947
1954
1936
1947
1954
1936
1948
1947
1954
1936
1948
1947
1954
1938
1936
1948
1947
1954
1938
1936
1948
1947
1954
1938
1936
1948
1947
1954
1938
1936
1948
1947
1954
1938
1936
1948
1947
1954
1938
1936
1948
1947
1954
1893
1965
1938
1936
1948
1947
1954
1887
1965
1938
1936
1948
1947
1954
1965
1938
1922
1936
1948
1946
1947
1954
1965
1938
1936
1948
1946
1947
1954
1965
1920
1938
1936
1948
1946
1947
1954
1975
1935
1965
1920
1938
1936
1948
1946
1958
1954
1975
1935
1965
1920
1938
1949
1936
1948
1946
1958
1954
1975
1908
1935
1913
1965
1920
1938
1949
1921
1936
MLB
1948
1946
1958
1954
1919
1975
1935
1965
1920
1933
1968
1938
1949
1934
MLB
1948
1946
1958
1919
1975
1935
1965
1920
1933
1968
1938
1949
1934
MLB
1948
1946
1958
1919
1975
1935
1965
1920
1933
1968
1938
1957
1949
1934
1973
1951
1950
MLB
1948
1946
1958
1919
1975
1935
1965
1920
1933
1968
1938
1957
1949
1930
1934
1973
1951
1950
MLB
1948
1946
1958
1919
1975
1902
1979
1935
1920
MLB
MLB
1886