Luis Castillo agrees to huge contract extension with Mariners
Luis Castillo was almost a Yankee, but now he may never be - Pinstripe Alley
Reds may seek Astros' top prospects in Luis Castillo trade talks
Luis Castillo Named To American League All-Star Team, by Mariners PR
Right and Wrong: Luis Castillo's 2021 Fantasy Outlook - FantraxHQ
The Mariners traded for Reds SP Luis Castillo and it's a wonderful move
Luis Castillo is somehow the Reds' worse starter - Beyond the Box Score
Dipoto details why Mariners made Luis Castillo trade, their rotation plans - Seattle Sports
What could the Reds get IF they traded Luis Castillo?