NY Times · Apr 2, 2017
How Much Harder Can a Starter Throw? Syndergaard Could Find Out
Human beings are stubborn. There is a strong belief that throwing a baseball repeatedly at high rates of speed can help lead to arm injuries, yet the average velocity of pitches in baseball keeps rising every year.
In 2008, the average four-seam fastball in Major League Baseball was 90.9 miles per hour, according to data on Fangraphs.com. How quaint that sounds now. That number jumped to 92.6 m.p.h. last season.