Billy Sharsig played a pivotal role in the resurrection of professional baseball in Philadelphia during the late 19th century, particularly with his involvement in founding the American Association Athletics. Born in Philadelphia in 1855 to Prussian refugees, Sharsig diverged from his expected career path in his father's dye factory, drawn instead to the allure of show business and the burgeoning sport of baseball. His early forays into baseball were characterized by playing and managing roles in local amateur and semipro teams, laying the groundwork for his future endeavors in the sport.

By 1880, at the age of 25, Sharsig had embarked on reviving the defunct Athletics baseball club with Horace Phillips. Despite financial challenges, including unsuccessful attempts to secure funding from his father and the legendary assistance of his mother's savings, Sharsig persisted. His efforts culminated in the establishment of a team that would play in the American Association, a league known for its Sunday games, beer sales, and affordable tickets, which were innovations at the time.

Sharsig's entrepreneurial spirit and dedication were instrumental in the Athletics' transformation. He managed to secure a lease for Oakdale Park, which he developed into a premier baseball venue with significant renovations, including enhanced seating and facilities to accommodate a growing fanbase. Alongside partners Charlie Mason and Lew Simmons, Sharsig navigated the Athletics through the early stages of the franchise, utilizing Mason's scouting and managerial skills and leveraging Simmons's connections and entertainment background to bolster the team's success.

Under Sharsig's leadership, the Athletics flourished, with notable achievements including a strong showing in the 1883 American Association season. His management and promotional skills helped reinvigorate Philadelphia's love for baseball, leading to the establishment of the Philadelphia Phillies in the National League and cementing the city's place in the professional baseball landscape.

However, Sharsig's journey was not without its challenges. The Athletics faced financial difficulties, changes in league structures, and the advent of player strikes. Despite these obstacles, Sharsig remained a central figure in the team's operations until external pressures and league dynamics eventually forced him out of his role. His contributions to the Athletics and professional baseball were significant, though often underappreciated in the broader historical narrative.

After leaving the Athletics, Sharsig continued his involvement in baseball, managing teams in various leagues and contributing to the sport's development until his health declined. His death in 1902 marked the end of a significant chapter in Philadelphia's baseball history, but his legacy lived on, particularly through his role in the early successes of the Athletics and his influence on the sport in Philadelphia. Sharsig's dedication to baseball and his innovative approaches to team management and promotion left an indelible mark on the game, making him a key figure in its 19th-century evolution.