Luis Castillo's return to the Reds rotation is what Cincinnati needs - Redleg Nation
Seattle Mariners trade for Luis Castillo
Mariners use early homers, strong start by Luis Castillo to top Nationals
Mariners and Luis Castillo agree to 5-year, $108 million extension with sixth-year option - Lookout Landing
Luis Castillo trade grades: Mariners, Reds both receive 'A' for deadline's first blockbuster
Trade deadline preview: Juan Soto sweepstakes down to wire
Luis Castillo (pitcher, born 1992) - Wikipedia
Kelenic, Rodríguez, Castillo lead Mariners to 11-2 rout over A's - Newsday
Jhony Brito outduels Luis Castillo, Yankees best Mariners 4-2
Ranking the top 20 MLB starting pitchers for 2023 – NBC Sports Boston
Vintage Verlander silences Seattle as Astros top M's 5-1 to open key series in playoff race – KIRO 7 News Seattle
Mariners beat Rays 1-0 in matchup of AL playoff contenders - The Columbian
Mariners Acquire Luis Castillo - MLB Trade Rumors
MLB off-season tracker: Ex-Tiger Ryan Raburn to join Reds
Seattle Mariners Give Luis Castillo Five-Year Contract Extension - Fastball