About Jack Theis
Lived 1891 – 1941 (aged 49). Jack Theis was an American baseball player.
John Louis Theis (July 23, 1891 – July 6, 1941) was a pitcher in Major League Baseball. He played for the Cincinnati Reds. Theis holds the record shared by many for the lowest ERA in MLB history, having not allowed an earned run in the only game of his career.
He died from a heart attack in 1941 shortly before his 50th birthday.
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Important facts
People in Jack Theis's life
Named in this biography and alive at the same time
Related people
Same field, nearest in time
Contemporaries
People whose lives overlapped Jack Theis's
Frequently asked questions
Who was Jack Theis?
Major League Baseball pitcher
When was Jack Theis born?
Jack Theis was born on 23 July 1891 in Georgetown.
When did Jack Theis die?
Jack Theis died on 6 July 1941 in Georgetown.
What was Jack Theis's occupation?
Jack Theis was a baseball player.
What nationality was Jack Theis?
Jack Theis was American.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Jack Theis. https://biography.guide/jack-theis/
MLA: "Jack Theis." Biography.guide, https://biography.guide/jack-theis/.
Chicago: "Jack Theis." Biography.guide. https://biography.guide/jack-theis/.
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