b. September 7, 1856 · First baseman who won 147 games with a 2.84 ERA across three clubs, 1884 to 1896.

b. September 7, 1879 · Pitcher across two clubs, 1901 to 1906.

b. September 7, 1887 · Pitcher across four clubs, 1913 to 1916.

b. September 7, 1889 · Center fielder across two clubs, 1913 to 1914.

b. September 7, 1899 · Pitcher for the Boston Red Sox, 1924 to 1924.

b. September 7, 1902 · Right fielder for the Boston Red Sox, 1927 to 1927.

b. September 7, 1903 · Left fielder across two clubs, 1928 to 1932.

b. September 7, 1903 · Pitcher who won 158 games with a 3.42 ERA across four clubs, 1934 to 1946.

b. September 7, 1907 · Pitcher across four clubs, 1930 to 1934.

b. September 7, 1917 · Right fielder across four clubs, 1943 to 1945.

b. September 7, 1936 · Catcher for the Chicago White Sox, 1958 to 1958.

b. September 7, 1944 · Pitcher across two clubs, 1969 to 1974.

b. September 7, 1946 · Made the catch that saved the 1972 World Series and was sold to Boston four years later for a million dollars, until the commissioner stopped it.

b. September 7, 1947 · Pitcher across two clubs, 1973 to 1978.

b. September 7, 1954 · Pitcher for the Kansas City Royals, 1979 to 1979.

b. September 7, 1958 · Catcher who batted .240 across two clubs, 1983 to 1990.

b. September 7, 1969 · Left fielder across two clubs, 1995 to 1999.

b. September 7, 1969 · Left fielder who batted .255 across nine clubs, 1994 to 2004.

b. September 7, 1972 · Was a Mets starting pitcher called the future, got hurt, and saved 300 games instead.

b. September 7, 1973 · Right fielder who batted .253 across five clubs, 1999 to 2008.

b. September 7, 1976 · Pitcher for the Seattle Mariners, 2003 to 2003.

b. September 7, 1979 · Pitcher across three clubs, 2006 to 2010.

b. September 7, 1995 · Threw six complete games and 228 innings in 2022 and was a unanimous Cy Young choice for a club that lost 93 games.

b. September 7, 1995 · Pitcher across two clubs, 2019 to 2023.

d. September 7, 1881 · Shortstop across two clubs, 1873 to 1879.

d. September 7, 1908 · Shortstop across two clubs, 1882 to 1884.

d. September 7, 1912 · Pitcher across three clubs, 1904 to 1911.

d. September 7, 1924 · Pitcher across two clubs, 1907 to 1910.

d. September 7, 1930 · First baseman for the Pittsburgh Pirates, 1911 to 1912.

d. September 7, 1938 · Left fielder across two clubs, 1916 to 1919.

d. September 7, 1942 · Catcher across six clubs, 1937 to 1942.

d. September 7, 1942 · Pitcher across three clubs, 1938 to 1942.

d. September 7, 1970 · Pitcher across two clubs, 1936 to 1938.

d. September 7, 1977 · Pitcher for the Philadelphia Phillies, 1923 to 1923.

d. September 7, 1977 · Center fielder who batted .221 for the New York Giants, 1940 to 1946.

d. September 7, 1982 · Cardinals third baseman who won the 1964 MVP award, taking five Gold Gloves and seven All-Star selections.

d. September 7, 1984 · A shortstop with 1,424 runs batted in who also managed two clubs, ran the Red Sox front office, and became president of the American League.

d. September 7, 1995 · Pitcher across four clubs, 1948 to 1955.

d. September 7, 1998 · Pitcher across five clubs, 1945 to 1953.

d. September 7, 2000 · Right fielder for the Brooklyn Dodgers, 1934 to 1936.

d. September 7, 2004 · Was a two-time East–West selection before hitting above .300 in consecutive seasons for Baltimore.

d. September 7, 2004 · Pitcher across two clubs, 1961 to 1967.

d. September 7, 2006 · Pitcher for the Boston Red Sox, 1950 to 1950.

d. September 7, 2008 · Third baseman who batted .256 across four clubs, 1936 to 1948.

d. September 7, 2017 · Shortstop who batted .229 across four clubs, 1966 to 1975.

d. September 7, 2019 · Catcher across two clubs, 1948 to 1957.

d. September 7, 2025 · Left fielder across two clubs, 1983 to 1987.

d. September 7, 2025 · First baseman who batted .242 across five clubs, 1958 to 1962.