Blue Jays: Circling back to Luis Castillo and Frankie Montas
Luis Castillo stars as Mariners beat Royals 3-2 to grab sole possession of AL West lead
Mariners ace Luis Castillo ready for challenge of slowing down Astros in Game 2 of ALDS
Law: Mariners go all-in for Luis Castillo, sending the Reds 2 top prospects and more - The Athletic
Luis Castillo is somehow the Reds' worse starter - Beyond the Box Score
We should probably be talking about Luis Castillo more - NBC Sports
Report: Yankees have 'talked' with Reds about RHP Luis Castillo
Mariners Trade Target: Reds Starting Pitcher Luis Castillo
Luis Castillo was almost a Yankee, but now he may never be - Pinstripe Alley