Rubbing Mud: Aroldis Chapman’s Slider and Fastball Adjustment Matthew Trueblood August 30, 2019 Share: > Image credit: USA Today Sports Subscribe to Baseball ProspectusHow has the Yankees' closer made up for a dip in velocity? 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 Subscribe to Baseball Prospectus In This Article 0 Aroldis ChapmanNew York Yankees Related Articles Lo mejor de BP 2025: Los Yankees contra el pastel by Steven Goldman 12/26 0 Hal Steinbrenner Didn’t Lie in Entirety $ by Rob Mains 11/25 14 Quantum Leap: The Fragility of Empire $ by Matthew Trueblood 11/17 2 The Managers Just Can’t Help It $ by Steven Goldman 10/30 3 Five & Dive, Episode 498: Nathan Lukes For You by Craig Goldstein, Patrick Dubuque, and Jeffrey Paternostro 10/10 0 Latest Articles Best of BP 2025: Sacrifices Must Be Made by Patrick Dubuque 12/26 0 Best of BP 2025: Speed Watch, featuring Chandler Simpson by Alexandra Whitley 12/26 0 Best of BP 2025: Chuck Dressen, A Man For Our Times by Steven Goldman 12/26 0 Best of BP 2025: Sorry We Missed You by Jeffrey Paternostro 12/26 0 Best of BP 2025: Understanding Swing Processes Through Bat and Pitch Tracking by Stephen Sutton-Brown 12/26 0 more chevron_rightchevron_right Matthew Trueblood @MATrueblood More about: Aroldis ChapmanNew York Yankees Latest Articles Best of BP 2025: Sacrifices Must Be Made by Patrick Dubuque 12/26 0 Best of BP 2025: Speed Watch, featuring Chandler Simpson by Alexandra Whitley 12/26 0 Best of BP 2025: Chuck Dressen, A Man For Our Times by Steven Goldman 12/26 0 Related Articles Lo mejor de BP 2025: Los Yankees contra el pastel by Steven Goldman 12/26 0 Hal Steinbrenner Didn’t Lie in Entirety $ by Rob Mains 11/25 14 Quantum Leap: The Fragility of Empire $ by Matthew Trueblood 11/17 2 You need to be logged in to comment. Login or Subscribe