Seattle Mariners trade for Luis Castillo
MLB trade deadline: Mariners went all in on Luis Castillo to try to end their playoff drought. Your move, Phillies.
Reds: Regrading the Mariners trade for Luis Castillo
Seattle Mariners acquire Luis Castillo, send package highlighted by prospect Noelvi Marte to Cincinnati Reds - ESPN
Reds 2021 offseason FAQ
Under-the-radar pitchers who could help raise the Mariners' floor - Seattle Sports
Mariners acquire Pitcher Luis Castillo From Reds in BLOCKBUSTER TRADE
Mariners Acquire RHP Luis Castillo from Cincinnati, by Mariners PR
Reds trade Luis Castillo to Seattle Mariners before MLB trade deadline