Luis Castillo traded by Reds to Mariners ahead of MLB trade deadline
Starting Pitching Rumors: Cardinals, Castillo, Mariners, AL Central - MLB Trade Rumors
Scouting by the numbers: Cincinnati Reds - Twinkie Town
MLB trade deadline, Juan Soto deal created more questions in baseball
Reds may seek Astros' top prospects in Luis Castillo trade talks
Who could trade for Castillo? Here are 6 deals we could see Reds doing
Would Mets trade Ronny Mauricio to get Reds' Luis Castillo?
Angels and Reds are talking Luis Castillo trade - Redleg Nation
Rumor: Reds' asking price for Luis Castillo amid Mets, Padres links, revealed