Geoff Hartlieb Stats & Bio | Athletics Pitcher

About Geoff Hartlieb

Geoff Hartlieb is a right-handed pitcher currently wearing jersey number 64 for the Oakland Athletics. Standing at an imposing 6'5" and 240 pounds, the Highland, Illinois native brings a powerful presence to the mound that commands attention in any ballpark. Born on December 9, 1993, Hartlieb developed his craft at Lindenwood University before making his way through professional baseball's ranks. His large frame allows him to generate considerable velocity and movement, making him a formidable option out of the bullpen. While recent outings have presented challenges, Hartlieb's journey from a small college program to a major league roster reflects tremendous determination and resilience. His continued presence in the Athletics organization demonstrates the team's belief in his ability to contribute at the highest level of professional baseball.

Updated: Mar 5, 2026