Agent: Royals trade Greinke to Brewers - Newsday
Lessons the Royals Can Learn From the Zack Greinke Trade
To get Zack Greinke, Angels moved heaven, earth - The Boston Globe
Smith, Walker homers spoil Greinke's return to Arizona, 9-5
Five years later: Remembering the Zack Greinke trade - Royals Review
Zack Greinke - Wikipedia
Zack Greinke turned down trade to Nationals in 2010
Royals Sign Zack Greinke - MLB Trade Rumors
Royals to re-sign Zack Greinke, according to a report - Royals Review