- MLB trade deadline: Mariners acquire Luis Castillo from Reds for huge prospect haulCBS Sports
- Mariners Acquire Luis CastilloMLB Trade Rumors
- MLB Trade Deadline: Yankees must choose between Juan Soto. Luis CastilloPinstripe Alley
- Reds: 2 veterans who’ll be traded, 1 who’ll stick aroundBlog Red Machine
- Seattle Mariners trade for Luis CastilloMLB.com