FOX Sports: MLB on X: TRADE: The Seattle Mariners are finalizing a deal to acquire Luis Castillo from the Cincinnati Reds, per @JeffPassan & @Ken_Rosenthal / X
The Seattle Mariners trade for Reds Ace Luis Castillo!, Locked On Mariners
ESPN's Passan: Next logical step for Mariners is locking up Luis Castillo - Seattle Sports
Luis Castillo dominates rubber match as trade deadline looms
Seattle Mariners acquire Luis Castillo, send package highlighted by prospect Noelvi Marte to Cincinnati Reds - ESPN
Seattle's Luis Castillo perfect through 6 innings vs Rockies
Dipoto details why Mariners made Luis Castillo trade, their rotation plans - Seattle Sports
Mariners extend ace they acquired at deadline with five-year, $108 million deal
Luis Castillo traded to the Seattle Mariners! Fair trade?