Aaron Leanhardt helped develop the first such bats with the Yankees, for whom he worked as a minor-league hitting coach and analyst.

Before joining the Marlins, Leanhardt worked as a major-league analyst for the Yankees. Per a profile by The Athletic, Leanhardt began work on the "torpedo bat" in 2022 while a member of the Yankees' minor-league hitting department. Now the "torpedo bat" is the biggest story in baseball and one of the biggest stories in sports.

Before he helped design the Yankees' viral 'torpedo' bats, Marlins field coordinator Aaron Leanhardt got his Ph.D. from MIT and was a professor at Michigan.