Jack Sinclair Stats & Bio | Nationals Pitcher

About Jack Sinclair

Jack Sinclair is a pitcher for the Washington Nationals, bringing size and athleticism to the mound at 6'4" and 170 pounds. Born on May 3, 1999, in Coral Springs, Florida, Sinclair developed his game in the competitive South Florida baseball landscape before taking his talents to the University of Central Florida, where he continued to refine his craft as a collegiate pitcher. His lean, projectable frame gives him the potential to add strength and velocity as he matures at the professional level. Sinclair has made an immediate impression in recent outings, posting a flawless 0.0 ERA while striking out three batters across one inning of work. His ability to miss bats early in his professional career signals a promising future for this young Nationals arm.

Updated: Mar 24, 2026