Phil Niekro
The grandaddy of all knuckleballers, Niekro’s dancing pitch kept him in the majors through age 48. The Hall of Famer won 318 games and is fourth all-time in innings pitched, topping 300 innings in a season an incredible four times. At 46, he became the oldest pitcher to throw a shutout, which would be broken 25 years later by someone else on this list.