25. Tony Mullane

Mullane arrived in Cincinnati as a seasoned veteran of the professional game and immediately matured into the centerpiece of the rotation. He was a pioneer in every sense, most famously for his ability to throw with either hand, a switch-pitching prowess that allowed him to alternate arms based on a hitter’s weakness or to combat the immense fatigue of the era. He emerged as a statistical titan from the moment he joined the club, using this tactical outlier to navigate a grueling schedule that would break most arms.

The absolute pinnacle of his effectiveness was reached in the late 1880s, a period when he served as an iron man for the franchise. Mullane was a master of endurance, spanning three seasons in which he surpassed 400 innings pitched, a workload that stands as a monument to his physical resilience. He wasn't just piling up innings; he was an efficiency machine who secured five separate 20-win campaigns and a pair of extraordinary 30-win seasons for the Reds. He possessed a rare blend of speed and deception that made him a perennial threat on the leaderboard and served as the high-stakes anchor for the Cincinnati staff during its formative years.

His identity was synonymous with a refined, "gentlemanly" persona that made him a massive draw at the gate, though he played with a fierce, competitive resolve that often put him at odds with management. Mullane was the tactical heartbeat of the team for nearly a decade, using his unique arm flexibility to remain a high-leverage producer even as the rules of the game evolved around him. Whether he was baffling a hitter with a left-handed curve or overpowering them with a right-handed heater, he competed with a professional poise that made him a local immortal.

The chapter concluded in 1893, when the veteran workhorse finally parted ways with the organization. He left the city as a statistical pillar and one of the most prolific winners in the history of the sport, having secured 163 of his 284 career victories in a Cincinnati uniform.

While his lack of a plaque in Cooperstown remains one of the great debates of the 19th-century game, his impact on the franchise was finally etched in stone a century later. In 2010, the organization provided the long-overdue punctuation on his legacy by inducting Tony Mullane into the Cincinnati Reds Hall of Fame.