Ex-Astros teammates Myles Straw, Zack Greinke smile over walk-up song
Why Zack Greinke signed with the Royals: 'It was my No. 1 choice' - The Athletic
Greinke on the possibility of returning to the Royals next year: 'There's a lot of good things here'
Royals' Zack Greinke wins AL Cy Young
Royals' Greinke voted AL Cy Young Award
A's top Royals 5-4 to spoil Zack Greinke's return from the injured list - ABC News
Zack Greinke uses PitchCom technology in start
Kansas City Royals' Legend Zack Greinke Exits Mound to Rousing Ovation in Possible Last Appearance - Fastball
Zack Greinke excited to return to Royals
Zack Greinke Set to Re-Join Kansas City Royals Yet Again - New Baseball Media
Zack Greinke Re-signs with the Kansas City Royals
Zack Greinke named Royals Opening Day starter - Royals Review