b. March 12, 1870 · Shortstop across two clubs, 1896 to 1899.

b. March 12, 1880 · Catcher for the Chicago White Sox, 1906 to 1906.

b. March 12, 1885 · Center fielder for the Philadelphia Phillies, 1908 to 1908.

b. March 12, 1892 · Pitcher for the Boston Braves, 1913 to 1919.

b. March 12, 1893 · Catcher who batted .218 across two clubs, 1920 to 1929.

b. March 12, 1906 · Pitcher across two clubs, 1932 to 1935.

b. March 12, 1908 · Pitcher for the Brooklyn Dodgers, 1935 to 1935.

b. March 12, 1915 · Shortstop across five clubs, 1937 to 1943.

b. March 12, 1930 · Won the Cy Young Award and two World Series games in 1960, and hurt his ankle in the celebration.

b. March 12, 1931 · Left fielder for the Baltimore Orioles, 1958 to 1958.

b. March 12, 1939 · Won the 1964 All-Star Game with a three-run home run in the ninth, and then watched the Phillies lose the pennant.

b. March 12, 1942 · Was called the Toy Cannon, walked 1,224 times, and got no Hall of Fame votes at all.

b. March 12, 1947 · Pitcher across three clubs, 1969 to 1977.

b. March 12, 1948 · Pitcher for the Houston Astros, 1969 to 1969.

b. March 12, 1956 · Most Valuable Player in 1982 and again in 1983, and 398 home runs, two short of the round number.

b. March 12, 1962 · Right fielder who hit 335 home runs across four clubs, eight times an All-Star.

b. March 12, 1965 · Had 2,548 hits, 320 stolen bases and five Gold Gloves in center field across nineteen seasons.

b. March 12, 1971 · Had two 30-home-run, 30-steal seasons and one of the best throwing arms anyone has seen.

b. March 12, 1976 · Pitcher for the Montreal Expos, 2003 to 2003.

b. March 12, 1981 · Pitcher for the New York Mets, 2007 to 2008.

b. March 12, 1990 · Pitcher across five clubs, 2019 to 2025.

b. March 12, 1999 · Shortstop for the Pittsburgh Pirates, 2023 to 2024.

b. March 12, 2002 · Third baseman for the Chicago White Sox, 2024 to 2025.

b. March 12, 2003 · First baseman whose 2025 rookie season for the Athletics produced 36 home runs in 117 games.

d. March 12, 1908 · Right fielder across two clubs, 1899 to 1901.

d. March 12, 1930 · Pitcher for the St. Louis Browns, 1913 to 1913.

d. March 12, 1957 · Pitcher across two clubs, 1913 to 1920.

d. March 12, 1962 · Center fielder who batted .252 across five clubs, 1909 to 1915.

d. March 12, 1972 · Pitcher for the Cleveland Indians, 1923 to 1928.

d. March 12, 1973 · His 2,880 hits were the most by a switch-hitter until Pete Rose, and he was the player the Giants gave up to get Rogers Hornsby.

d. March 12, 1973 · Left fielder for the Pittsburgh Pirates, 1916 to 1917.

d. March 12, 1974 · Catcher across two clubs, 1914 to 1914.

d. March 12, 1975 · Pitcher across two clubs, 1935 to 1941.

d. March 12, 1978 · Left-handed outfielder who played for eight clubs in fifteen seasons and made the 1937 All-Star team with the Boston Bees.

d. March 12, 1978 · Second baseman who batted .229 across two clubs, 1910 to 1917.

d. March 12, 1978 · Catcher across two clubs, 1946 to 1953.

d. March 12, 1982 · Third baseman across two clubs, 1931 to 1937.

d. March 12, 1983 · Pitcher across two clubs, 1949 to 1953.

d. March 12, 1986 · Shortstop for the Chicago White Sox, 1949 to 1949.

d. March 12, 1994 · First baseman who batted .273 across two clubs, 1959 to 1967.

d. March 12, 2001 · Pitcher for the St. Louis Cardinals, 1949 to 1949.

d. March 12, 2002 · Won the fourth game of the 1948 World Series and was photographed with his arms around Larry Doby.

d. March 12, 2014 · Pitcher for the Boston Bees, 1938 to 1938.

d. March 12, 2015 · Pitcher across two clubs, 1957 to 1963.

d. March 12, 2016 · Pitcher for the Minnesota Twins, 1964 to 1964.

d. March 12, 2019 · Left fielder for the Pittsburgh Pirates, 1978 to 1979.

d. March 12, 2020 · Pitcher for the Chicago White Sox, 1956 to 1957.

d. March 12, 2024 · Catcher who batted .188 across three clubs, 1968 to 1978.