PITTSBURGH — Spin rate is the measure of how often a baseball rotates around its axis after a pitcher lets the ball go toward home plate. It’s something that’s always existed in baseball, and spinning the ball is how breaking pitches were invented. A curveball will have a very high spin rate, with pitches with […]
To continue reading this article, you need to be a subscriber. You can join us by purchasing one of the following plans: Annual Subscription, Top Prospect Plan or Monthly Subscription. If you're already a subscriber, make sure that you are logged in, using the link at the top of the page. If you have any issues, email help@piratesprospects.com.
IMPORTANT: You will need to update your password after the switch to the new server in order to log in and comment. Go to the Password Reset Page to change your password.