Why It’s Almost Impossible for Fastballs to Get Any Faster

(via Wired)  A wickedly fast fastball isn’t the anomaly it once was. A decade ago, Major League pitchers threw a grand total of just 196 triple-digit fastballs in a single season. Last year, 40 pitchers collectively threw 1,017. But while baseball’s hallmark pitch has increased in popularity, it hasn’t increased in velocity.