In baseball, a pitcher who throws the ball very fast is a fireballer. Notable fireballers include Nolan Ryan and Roger Clemens. Picture of Fenway Park. ... A baseball pitcher delivers the ball to home plate In baseball, the pitcher is the player who throws the baseball from the pitchers mound toward the catcher to begin each play, with the goal of retiring a batter who attempts to either make contact with it or draw a... Jump to: navigation, search Nolan Ryan Lynn Nolan Ryan, Jr. ... Jump to: navigation, search William Roger Clemens (born August 4, 1962 in Dayton, Ohio), nicknamed The Rocket, is among the preeminent Major League baseball pitchers of the 1980s, 1990s, and 2000s. ...