Joe Mack (first baseman)
American baseball player

Joseph John Mack (né Maciarz, January 4, 1912 – December 19, 1998) was an American Major League Baseball first baseman who played for the Boston Braves in 1945. The 33-year-old rookie was a native of Chicago.
Mack is one of many ballplayers who only appeared in the major leagues during World War II. He made his major league debut on April 17, 1945 (Opening Day) against the New York Giants at Braves Field. He was Boston's regular first baseman until the July 4, when he played in his last big league game.
Season and career totals include 66 games played, a .231 batting average (60-for-260), 3 home runs, 44 runs batted in, and 30 runs scored. He made 6 errors in 65 games at first base and had a fielding percentage of .991.
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The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Jul 3, 2026. The linked authority identifier is Q16014117. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1912, 1998 and 1945.
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This entry incorporates text from “Joe Mack (first baseman)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.