Mariners Insider Blog

Shawn Kelley and the two-seam fastball

The insights into pitching continues with reliever Shawn Kelley talking about a two-seam fastball today.

We've now had Chance Ruffin (slider), Steve Delabar (split-fingered fastball), Dan Hultzen (curve) and Kelley, and we're working on a couple more pitches before we've run the table. No knuckleball spedialists in camp this spring.

If you've never fully understood the difference between a two-seam fastball and four-seam fastball, listen to Kelley on the video above - his explanation is simple. Enjoy