Mariners acquire Luis Castillo in trade with Reds
The Seattle Mariners trade for Luis Castillo, make bid for postseason - Lookout Landing
Right-handed pitcher Luis Castillo is heading to the Seattle Mariners, per @jeffpassan.
Seattle Mariners acquire Luis Castillo, send package highlighted by prospect Noelvi Marte to Cincinnati Reds - ESPN
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Righthander Luis Castillo stellar in his Seattle debut, helping the Mariners defeat the Yankees - The Boston Globe
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Mariners check in with Cincinnati Reds about Luis Castillo, per report
Luis Castillo goes from trade deadline target to Yankees foe
Luis Castillo traded to Mariners by Reds for 4 prospects - The San Diego Union-Tribune
Mariners acquire Reds All-Star pitcher Luis Castillo in trade - Los Angeles Times
Regrading the Luis Castillo trade after Reds call up Noelvi Marte
Why the Reds didn't extend Luis Castillo before Mariners trade