What exactly is a torpedo bat? How does it help hitters? And how is it legal? Let's dig in. Read:An MIT-educated professor, the Yankees and the bat that could be changing baseball

If you’re a baseball fan, you likely have spent the last week hearing a lot about the “torpedo bat” the New York Yankees recently debuted to much success. So what is it exactly?

Among the Yankees hitters who are using it, Anthony Volpe is a model for poor hitters who might see the torpedo bat as hope of becoming a good hitter. He's gained nearly 2 mph in average bat speed and 0.8 mph in average exit velocity.