MLB playoffs: Why Zack Greinke gives signs while pitching - Sports Illustrated

Report: Yankees fans taunted Zack Greinke about his mother, battles with anxiety and depression - NBC Sports

Joe Posnanski: Zack Greinke is in Total Control - Sports Illustrated

10 Zack Greinke stories that explain why there's no other pitcher like him - The Athletic

Kansas City Royals Zack Greinke Sports Illustrated Cover by Sports Illustrated

Kansas City Royals: Six Years After Trading Zack Greinke

Zack Greinke calls out signs in win vs. Giants

Zack Greinke's masterful season for the Los Angeles Dodgers is the culmination of every campaign that preceded it - ESPN

Zack Greinke Only Builds His Unique Legend With Incredible Pitch Calling Trick — Here's the Sign, Now Try and Hit It

Zack Greinke celebrated in sweep of Guardians

Cole pitches Astros past Yankees 4-1 for 2-1 lead in ALCS –

Zack Greinke Only Builds His Unique Legend With Incredible Pitch Calling Trick — Here's the Sign, Now Try and Hit It

Zack Greinke Only Builds His Unique Legend With Incredible Pitch Calling Trick — Here's the Sign, Now Try and Hit It