Geoff Hartlieb
American baseball player
Geoffrey Thomas Hartlieb (born December 9, 1993) is an American professional baseball pitcher for the Athletics of Major League Baseball (MLB). He has previously played in MLB for the Pittsburgh Pirates, New York Mets, Miami Marlins, Colorado Rockies, New York Yankees, and Detroit Tigers.
Amateur career
Hartlieb attended Highland High School in Highland, Illinois. Hartlieb was all-state in basketball his junior and senior years of high school, and originally quit baseball at the end high school. He attended Quincy University in Quincy, Illinois his freshman year of college in 2013 and played college basketball for the Hawks. He then transferred to Lindenwood University in Saint Charles, Missouri to play college baseball from 2014 through 2016. He was drafted by the New York Mets in the 37th round of the 2015 MLB draft, but did not sign and returned to Lindenwood.
Professional career
Pittsburgh Pirates
The Pittsburgh Pirates selected Hartlieb in the 29th round of the 2016 Major League Baseball draft and signed. He signed with the Pirates spent his first professional season with the Bristol Pirates in 2016, going 4–1 with a 4.44 earned run average (ERA) in 26 innings pitched. He spent the 2017 season with the West Virginia Power and the Bradenton Marauders, combining to go 2–6 with a 2.12 ERA in 63+2⁄3 innings.
This brief starts where responsible research should: with the source description of “Geoff Hartlieb” as american baseball player. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the people & ideas register because the source frames it as american baseball player. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Sep 24, 2026. The linked authority identifier is Q64009978. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1993, 2013, 2014 and 2016.
Public reputation and documentary evidence do not always develop together; absence from a summary is not evidence of historical absence. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Geoff Hartlieb” 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.