In 1974, Nolan Ryan became the first MLB pitcher to be tracked by a radar during a game. His fastball topped out at 100.8 miles per hour. But, experts have pointed out that Nolan Ryan's ball was being measured before it crossed the plate. Today, ball speed is recorded once it leaves a pitcher's hand. So, technically, Nolan Ryan's fastball could have been upwards of 108 miles per hour.
Currently, Aroldis Chapman holds the record for fastest recorded pitch speed with a 105.1 mph pitch on September 24, 2010. How long will that record stand with pitchers throwing faster? JustBallGloves.com tries to tackle the question, What is the fastest you can throw a baseball?