Which pitcher had the most effective fastball in MLB history?

Time to take a break

Who had the most effective fastball in MLB history? This is a timeline I have created of the greatest fastball pitchers, starting from the very beginning. After the timeline there are two rankings of the all-time greatest fastballers. Fans of the fastest fastballs will want to keep an eye out for the account of an umpire who thought he was losing his mi…