A changeup is a type of pitch in baseball. Other names include change-of-pace and simply change. The changeup is sometimes called an off-speed pitch, although that term can also be used simply to mean any pitch that's slower than a fastball. In addition, before at least the second half of the twentieth century, the term slow-ball was used to denote pitches not a fastball or breaking ball, which almost always meant a type of changeup. Therefore, the terms slow-ball and changeup could be used int… (More on Changeup)