Mariners acquire All-Star starter Luis Castillo from Reds for four prospects

Luis Castillo's quiet confidence providing a spark for Seattle Mariners

Mariners get All-Star RHP Castillo for prospects Marte and Arroyo, 2 RHP - Seattle Sports

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Reds trade Luis Castillo to Mariners for 4 prospects

Reds trade Luis Castillo to Seattle Mariners before MLB trade deadline

SeattleTimes] 'There's only one Luis Castillo': A year later, blockbuster trade looks like win for Mariners, Reds : r/Mariners

Luis Castillo (pitcher, born 1992) - Wikipedia

Seattle Mariners acquire Luis Castillo, send package highlighted by prospect Noelvi Marte to Cincinnati Reds - ESPN

Rumor: Reds' asking price for Luis Castillo amid Mets, Padres links, revealed