Zack Greinke sits on grass, throws 54 mph pitch

MLB on X: 54 mph?! Zack Greinke's back to his old tricks. 😂 / X

Zack Greinke helps Royals get an out in most unusual fashion

51 MPH PITCH! Astros' Zack Greinke lofts slow pitch in for the strike!

It's Time to be Concerned About Zack Greinke's Fastball

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

Zack Greinke

Zack Greinke Throws Slowest Eephus51 MPH! Slowest Pitches By Greinke!

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

TIL Zack Greinke Once Told An Ice Cold Alex Gordon That He Wanted To Show Him Something In The Video Room. When An Excited Gordon Arrived, Greinke Had Cued Up a Video

Zack Greinke throws warmup pitch in middle of at-bat, a breakdown

The Legend of Zack Greinke