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10 Years Old and Younger. The average fastball velocity for pitchers 10 years old and younger is between 40-50 mph. The average change up speed for this age group is about 10 mph slower, putting the velocity between 30-40 mph. 11 and 12 Year Olds. Pitchers in this age group are playing in the Majors division in Little League. The average fastball is between 50-60 mph. However, at this age the players may start to hit puberty, therefore it is not uncommon to see a pitcher throwing near 70 mph. The changeup velocity at this age is typically between 40-50 mph.
95 mph is considered a plus fastball velocity, and +97-98 mph  a plus, plus velocity.    the 90 range is a good speed for an mlb pitcher. some pitchers do  pitch in the high 80s though.real good pitchers pitch 100mph too   Randy Johnson threw a 103 mph fastball.k, soo a good softball speed for 12-13 is 50 mph the really good pitchers throw around 55. When you turn 16-17 your goal should be 55 mph. Collage is high 60 to low 70. I thi â¦ nk high school the really good pitchers will throw around the 60 mph.