Sullivan was a professional baseball player whose brief career spanned just two games during the 1875 season. As a position player, he made a notable impact in his short time on the field, finishing with a batting average of .375. This impressive figure was bolstered by three hits, two of which contributed to his runs batted in (RBIs), and he also showcased his speed with one stolen base. Although he did not hit any home runs, his performance highlighted the offensive capabilities that players of his era were beginning to develop.
Playing during the early years of professional baseball, Sullivan's career came at a time when the game was evolving rapidly, transitioning from the informal play of the 19th century to more structured league competitions. His contributions, albeit limited in duration, reflected the emerging talent that would help shape the future of the sport. While his time in Major League Baseball was fleeting, Sullivan’s .375 batting average remains a testament to the potential that players of his era possessed, marking him as a noteworthy figure in the annals of baseball history.