How Yankees' Aroldis Chapman fixed his dominant fastball (PHOTOS
Down On The Farm. Series of top Phillies minor league…
How Vertical Approach Angle, or VAA, is helping MLB pitchers
Aroldis Chapman and More Velocity Charts – BaseballCloud Blog
Bullpen report: Updated closer tiers, trouble for Aroldis Chapman
Jordan Hicks gets 3 saves, thrives as Cardinals closer
[Talkin' Yanks] Aroldis Chapman this season: 9 G, 7.1 IP, 0 R, 2 H
The slider could be the most important World Series pitch - The
Tyler Chatwood Has Become a Uniquely Dominant Reliever
Aroldis Chapman's Four-Seam Velocity Has Been Key To Early Success