It has a seemingly inflated barrel that is thickest and heaviest where the player most frequently makes contact, then narrowing at the end.

The Washington Nationals are a rebuilding team that's finally starting to show real progress after a rough half-decade, but the New York Yankees' "torpedo" bats have taken the league by storm early this season.

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.