The Detroit Tigers franchise has had lots of ups and downs over the years. Lately, it's mostly down.
| Year | Win Percentage |
| 1901 | 54.81481481 |
| 1902 | 38.51851852 |
| 1903 | 47.79411765 |
| 1904 | 40.78947368 |
| 1905 | 51.63398693 |
| 1906 | 47.65100671 |
| 1907 | 61.33333333 |
| 1908 | 58.82352941 |
| 1909 | 64.47368421 |
| 1910 | 55.84415584 |
| 1911 | 57.79220779 |
| 1912 | 45.09803922 |
| 1913 | 43.1372549 |
| 1914 | 52.2875817 |
| 1915 | 64.93506494 |
| 1916 | 56.49350649 |
| 1917 | 50.98039216 |
| 1918 | 43.65079365 |
| 1919 | 57.14285714 |
| 1920 | 39.61038961 |
| 1921 | 46.40522876 |
| 1922 | 51.2987013 |
| 1923 | 53.8961039 |
| 1924 | 55.84415584 |
| 1925 | 52.5974026 |
| 1926 | 51.2987013 |
| 1927 | 53.59477124 |
| 1928 | 44.15584416 |
| 1929 | 45.45454545 |
| 1930 | 48.7012987 |
| 1931 | 39.61038961 |
| 1932 | 50.33112583 |
| 1933 | 48.7012987 |
| 1934 | 65.58441558 |
| 1935 | 61.58940397 |
| 1936 | 53.8961039 |
| 1937 | 57.79220779 |
| 1938 | 54.54545455 |
| 1939 | 52.5974026 |
| 1940 | 58.44155844 |
| 1941 | 48.7012987 |
| 1942 | 47.4025974 |
| 1943 | 50.64935065 |
| 1944 | 57.14285714 |
| 1945 | 57.51633987 |
| 1946 | 59.74025974 |
| 1947 | 55.19480519 |
| 1948 | 50.64935065 |
| 1949 | 56.49350649 |
| 1950 | 61.68831169 |
| 1951 | 47.4025974 |
| 1952 | 32.46753247 |
| 1953 | 38.96103896 |
| 1954 | 44.15584416 |
| 1955 | 51.2987013 |
| 1956 | 53.24675325 |
| 1957 | 50.64935065 |
| 1958 | 50 |
| 1959 | 49.35064935 |
| 1960 | 46.1038961 |
| 1961 | 62.34567901 |
| 1962 | 52.79503106 |
| 1963 | 48.7654321 |
| 1964 | 52.4691358 |
| 1965 | 54.9382716 |
| 1966 | 54.32098765 |
| 1967 | 56.17283951 |
| 1968 | 63.58024691 |
| 1969 | 55.55555556 |
| 1970 | 48.7654321 |
| 1971 | 56.17283951 |
| 1972 | 55.12820513 |
| 1973 | 52.4691358 |
| 1974 | 44.44444444 |
| 1975 | 35.8490566 |
| 1976 | 45.96273292 |
| 1977 | 45.67901235 |
| 1978 | 53.08641975 |
| 1979 | 52.79503106 |
| 1980 | 51.85185185 |
| 1981 | 55.04587156 |
| 1982 | 51.2345679 |
| 1983 | 56.79012346 |
| 1984 | 64.19753086 |
| 1985 | 52.17391304 |
| 1986 | 53.7037037 |
| 1987 | 60.49382716 |
| 1988 | 54.32098765 |
| 1989 | 36.41975309 |
| 1990 | 48.7654321 |
| 1991 | 51.85185185 |
| 1992 | 46.2962963 |
| 1993 | 52.4691358 |
| 1994 | 46.08695652 |
| 1995 | 41.66666667 |
| 1996 | 32.71604938 |
| 1997 | 48.7654321 |
| 1998 | 40.12345679 |
| 1999 | 42.85714286 |
| 2000 | 48.7654321 |
| 2001 | 40.74074074 |
| 2002 | 34.16149068 |
| 2003 | 26.54320988 |
| 2004 | 44.44444444 |
| 2005 | 43.82716049 |
| 2006 | 58.64197531 |
| 2007 | 54.32098765 |
| 2008 | 45.67901235 |
| 2009 | 52.7607362 |
| 2010 | 50 |
| 2011 | 58.64197531 |
| 2012 | 54.32098765 |
| 2013 | 57.40740741 |
| 2014 | 55.55555556 |
| 2015 | 45.96273292 |
| 2016 | 53.41614907 |
| 2017 | 39.50617284 |
| 2018 | 39.50617284 |
| 2019 | 29.19254658 |
| 2020 | 39.65517241 |
