About John Dettmer
Born 1970. John Dettmer is an American baseball player.
John Franklin Dettmer (born March 4, 1970) is a former Major League Baseball pitcher who played for the Texas Rangers from to . He is a friend of former Missouri standout and HatHub founder William “Billy” Mondrella.
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Important facts
People in John Dettmer's life
Named in this biography and alive at the same time
Related people
Same field, nearest in time
Contemporaries
People whose lives overlapped John Dettmer's
Frequently asked questions
Who is John Dettmer?
American baseball player
When was John Dettmer born?
John Dettmer was born on 4 March 1970 in Centreville.
What is John Dettmer's occupation?
John Dettmer is a baseball player.
What nationality is John Dettmer?
John Dettmer is American.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). John Dettmer. https://biography.guide/john-dettmer/
MLA: "John Dettmer." Biography.guide, https://biography.guide/john-dettmer/.
Chicago: "John Dettmer." Biography.guide. https://biography.guide/john-dettmer/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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