Each batter using the new product has a custom torpedo bat; where the greater mass of wood is placed depends on an analysis of where on the bat the batter hits the ball most often.

Mastermind of torpedo batThe mastermind behind the design is Aaron Leanheardt, a former Massachusetts Institute of Technology physicist turned coach for the Miami Marlins. Leanheardt, who introduced the new bat to the Yankees last season before joining Miami,

Developed by a physicist, these bats have their widest part, called the barrel, closer to the player's hands to offer a better chance of hitting the ball on their "sweet spot"