b. April 9, 1879 · Pitcher who won 189 games with a 2.39 ERA across two clubs, 1901 to 1913.

b. April 9, 1879 · Pitcher across three clubs, 1901 to 1906.

b. April 9, 1888 · Pitcher who won 178 games with a 2.49 ERA across three clubs, 1908 to 1921.

b. April 9, 1893 · Pitcher across two clubs, 1926 to 1931.

b. April 9, 1904 · Pitcher who won 106 games with a 3.92 ERA across four clubs, 1927 to 1939.

b. April 9, 1904 · Pitcher across three clubs, 1925 to 1930.

b. April 9, 1905 · Went 13-4 with eight saves and a 2.08 earned run average for the White Sox in 1946.

b. April 9, 1909 · Pitcher who won 162 games with a 3.32 ERA across three clubs, 1935 to 1947.

b. April 9, 1921 · Right fielder for the New York Giants, 1943 to 1945.

b. April 9, 1922 · Pitcher for the Washington Senators, 1949 to 1949.

b. April 9, 1952 · Pitcher for the San Francisco Giants, 1978 to 1979.

b. April 9, 1961 · Catcher across six clubs, 1987 to 1996.

b. April 9, 1964 · Pitcher for the Chicago Cubs, 1994 to 1994.

b. April 9, 1965 · First baseman who batted .304 across four clubs, 1988 to 2000.

b. April 9, 1967 · Pitcher across seven clubs, 1993 to 2003.

b. April 9, 1981 · Catcher who batted .239 across four clubs, 2008 to 2018.

b. April 9, 1981 · Pitcher across three clubs, 2008 to 2017.

b. April 9, 1981 · Pitcher across three clubs, 2006 to 2009.

b. April 9, 1982 · Pitcher across three clubs, 2008 to 2011.

b. April 9, 1984 · Pitcher across four clubs, 2006 to 2016.

b. April 9, 1985 · Reliever who has pitched in more than 880 games across eighteen seasons and won a World Series with the Yankees in 2009.

b. April 9, 1986 · Center fielder across two clubs, 2010 to 2012.

b. April 9, 1987 · Third baseman across two clubs, 2014 to 2021.

b. April 9, 1994 · Pitcher for the San Francisco Giants, 2020 to 2021.

d. April 9, 1874 · Catcher for the New York Mutuals, 1871 to 1872.

d. April 9, 1910 · Second baseman who batted .277 across six clubs, 1871 to 1877.

d. April 9, 1918 · Left fielder for the New York Highlanders, 1911 to 1911.

d. April 9, 1921 · Left fielder for the Boston Reds, 1884 to 1884.

d. April 9, 1961 · Pitcher across two clubs, 1919 to 1921.

d. April 9, 1969 · Pitcher for the Philadelphia Phillies, 1909 to 1909.

d. April 9, 1971 · Ban Johnson's secretary, who became American League president and held it for thirty-one years.

d. April 9, 1980 · First baseman who batted .313 across two clubs, 1928 to 1934.

d. April 9, 1982 · Pitcher for the Chicago White Sox, 1974 to 1981.

d. April 9, 1982 · Pitcher for the Philadelphia Athletics, 1923 to 1923.

d. April 9, 1983 · Pitcher across five clubs, 1948 to 1957.

d. April 9, 1983 · Pitcher for the Chicago White Sox, 1925 to 1925.

d. April 9, 1986 · Right fielder who batted .263 across two clubs, 1948 to 1954.

d. April 9, 1995 · Was Rookie of the Year in Washington in 1959 and made the catch that saved the 1965 World Series.

d. April 9, 1997 · Pitcher across three clubs, 1942 to 1955.

d. April 9, 1999 · Pitcher for the Chicago Cubs, 1935 to 1940.

d. April 9, 2001 · He gave Pittsburgh twenty-one seasons, more than any other Pirate, and 475 home runs, and his teammates called him Pops.

d. April 9, 2006 · Third baseman who batted .243 across five clubs, 1942 to 1953.

d. April 9, 2006 · Left fielder who batted .268 across three clubs, 1937 to 1949.

d. April 9, 2010 · Pitcher for the Chicago Cubs, 1953 to 1953.

d. April 9, 2020 · Left fielder who batted .229 across five clubs, 1950 to 1959.

d. April 9, 2022 · Pitcher across two clubs, 1959 to 1964.

d. April 9, 2026 · Catcher who batted .216 across three clubs, 1961 to 1968.

d. April 9, 2026 · Pitcher for the Milwaukee Braves, 1955 to 1955.