The average fastball speed for a 13-year-old baseball pitcher is approximately 54 mph.
According to information referenced from the National Library of Medicine, 54 mph represents the typical pitching speed for players in this age group. It's important to note that while 54 mph is average, speeds reaching up to 64 mph are considered fairly common for 13-year-old pitchers.
Age 13 is a significant period for physical development in young athletes. Growth patterns can vary widely at this stage; some players experience significant growth spurts and corresponding increases in pitching velocity, while others may still be awaiting these developmental changes. This natural variation in physical maturity contributes to the range of speeds seen among 13-year-old pitchers, from the average of 54 mph to the more common upper range of 64 mph.
