Image credit: Brad Penner-USA TODAY Sports
Humberto Mejía's big movement (on pitches and between levels), Thomas Hatch's heat, and more, in a weekly look at how rookie pitchers are standing out in their debuts.

Full access to this article is for Premium Baseball Prospectus subscribers.

Sign up today to get access to insightful analysis for the discerning baseball fan.

Super-Premium - $66.99 / yearPremium - $45.95 / yearPremium Monthly - $6.99 / month
You need to be logged in to comment. Login or Subscribe