College World Series to World Series in one year? Why a Tennessee pitcher with a 104 mph fastball has a chance
Baseball's existential crisis: Why pitchers are becoming more unhittable than ever - CBS News
The Royals have quietly put together the hardest throwing bullpen in baseball - Royals Review
Walter Johnson: The hardest throwing pitcher in baseball history - Baseball Egg
Australia's baseball prodigy has a fastball that could take her to the major leagues, Baseball
Who are the hardest throwers in the Mets minor league system? - Amazin' Avenue
Dangerous trend in baseball: As pitching speeds increase, so do injuries to pitchers, Sports
Simple Hacks to Throw Faster
Fastball - Wikipedia
How it Works: The Fastball