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Mark Dewey

b. 1965

American baseball player

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About Mark Dewey

Born 1965. Mark Dewey is an American baseball player.

Mark Alan Dewey (born January 3, 1965) is an American former Major League Baseball player.

He was a 6'0" right-handed relief pitcher who played six seasons in the major leagues with the San Francisco Giants (1990, 1995–96), New York Mets (1992), and Pittsburgh Pirates (1993–94).Born in Grand Rapids, Dewey played for the Grand Valley State University Lakers. In 1987, he struck out 87 batters in 97.2 innings. On June 2, 1987, Dewey was drafted by the Giants in the 23rd round of the 1987 amateur draft. He appeared in 205 major league games and had a lifetime record of 12–7 (.632 winning percentage) with 168 strikeouts, 70 games finished and 8 saves. His lifetime earned run average was 3.65 for an Adjusted ERA+ of 110. His best season was 1993 when he had 7 saves for the Pirates in 21 games and maintained an impressive 2.36 ERA for an Adjusted ERA+ of 171. In his final season, Dewey appeared in 78 games for the Giantsβ€”3rd most in the National League. Dewey earned $225,000 in his final season in the big leagues. In 1995, Dewey was inducted into the Grand Valley State University Athletic Hall of Fame.

Dewey was involved in a notable controversy on July 28, 1996, when he refused to participate with his teammates in a pregame ceremony intended to support research for a cure for AIDS. As part of "Until There's A Cure Day", members of the Giants wore AIDS awareness ribbons on their uniforms and stood in a group shaped like that symbol during speeches by Giants owner Peter Magowan and San Francisco Mayor Willie Brown. Dewey refused to take the field for the ceremony, and he wore his ribbon sideways (which would have resembled the Icthys, a popular symbol meant to represent Jesus in Christian culture). He cited religious reasons for his refusal, stating that the ceremony was "against [his] Christian principles" and voicing the belief that homosexuality is a sin.

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Important facts

Birth century
Occupation
Nationality
Education
Grand Valley State University
Also known as
Mark Alan Dewey

People in Mark Dewey's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Mark Dewey's

Frequently asked questions

Who is Mark Dewey?

American baseball player

When was Mark Dewey born?

Mark Dewey was born on 3 January 1965 in Grand Rapids.

What is Mark Dewey's occupation?

Mark Dewey is a baseball player.

What nationality is Mark Dewey?

Mark Dewey is American.

Sources & further reading

Β· Wikipedia: Mark Dewey

Β· Wikidata: Q6767362

Β· DBpedia: Mark Dewey

Cite this page

APA: Biography.guide. (2026). Mark Dewey. https://biography.guide/mark-dewey/

MLA: "Mark Dewey." Biography.guide, https://biography.guide/mark-dewey/.

Chicago: "Mark Dewey." Biography.guide. https://biography.guide/mark-dewey/.

Data last updated: 2026-09-20 Β· Spot an error? Report a correction.

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