What is the fastest pitch ever thrown in MLB history?

What is the fastest pitch ever thrown in MLB history? As a result, Aroldis Chapman is credited with throwing the fastest pitch in MLB history. On Sept. 24, 2010, Chapman made MLB history. Then a rookie relief pitcher for the Cincinnati Reds, the fireballer unleashed a fastball clocked at 105.1 mph by PITCH/fx. MLB later bumped that up to 105.8 mph.

As a result, Aroldis Chapman is credited with throwing the fastest pitch in MLB history. On Sept. 24, 2010, Chapman made MLB history. Then a rookie relief pitcher for the Cincinnati Reds, the fireballer unleashed a fastball clocked at 105.1 mph by PITCH/fx. MLB later bumped that up to 105.8 mph.