(1) Wilhelm and Niekro are the only two pitchers in the Hall of Fame who relied primarily on the knuckleball throughout their careers.(2) He had pitched in high school and occasionally had thrown a knuckleball .(3) Eddie Cicotte is thought to be the first major league pitcher to specialize in throwing the knuckleball .(4) Sauveur throws a fastball, knuckleball , curveball and cutter, and he changes speeds with all of them.(5) As a knuckleballer , Sparks could prove invaluable because he'll be available to pitch more often.(6) Unlike many knuckleballers , Wakefield never tried pitching conventionally.(7) Sparks, 36, a knuckleballer , has proved his resurgence last year wasn't a fluke.(8) One of the early knuckleballers , Fitzsimmons was traded to Brooklyn during the 1937 season.(9) He was a knuckleballer and may be the last pitcher to start both games of a doubleheader.(10) You'll learn the rules of offense and defense, and all about fastballs, curveballs, knuckleballs and screwballs.