Spencer Giesting Stats & Bio | Diamondbacks Pitcher

About Spencer Giesting

Spencer Giesting is a pitcher for the Arizona Diamondbacks, wearing jersey number 15 and bringing a impressive 6'4", 200-pound frame to the mound. Born on July 2, 2001, in Fairfield, Ohio, Giesting developed his craft through dedication and hard work before reaching the professional ranks. He honed his skills at the University of North Carolina Charlotte, where he built the foundation that would eventually earn him a spot in one of baseball's most competitive organizations. As a young pitcher still early in his professional journey, Giesting represents the future of the Diamondbacks' pitching staff. His size gives him a natural advantage on the mound, allowing him to generate power and movement that keeps opposing hitters off balance. Arizona fans have every reason to be excited about what lies ahead for this talented Ohio native.

Updated: Mar 4, 2026