Mariners lock up Castillo to 5-year extension reportedly worth $108M
Seattle Mariners, Luis Castillo agree to five-year, $108 million extension - ESPN
Luis Castillo Is Going To Be a Mariner for Awhile
Luis Castillo (pitcher, born 1992) - Wikipedia
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Mariners believe rotation set for future after Castillo deal
Luis Castillo, Mariners Agree on Extension, per Report - Sports Illustrated
Mariners and Luis Castillo agree to 5-year, $108 million extension with sixth-year option - Lookout Landing
Castillo, Mariners agree to $108M, 5-year deal through '27
Luis Castillo
Luis Castillo, Mariners Agree To Multi-Year Deal
Mariners ink ace Castillo to five-year extension