Jackie Delane Aker (born July 13, 1940) is an American former Major League Baseball right-handed relief pitcher. Aker was used exclusively in relief. He appeared in 495 games, none as a starter, and was one of the American League's best closers of his era. He is of Potawatomi Indian ancestry.
- ^ "American Indian Baseball Players". baseball-almanac.com. Retrieved March 19, 2015.
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