Nick Castellanos opts against opting-out of Cincinnati Reds contract - Red Reporter
Report: Nick Castellanos Opts out of Final 2 Years, $32m Remaining in Reds Contract, News, Scores, Highlights, Stats, and Rumors
Sources: It's 'possible' Phillies could sign Nick Castellanos, exceed luxury tax – NBC Sports Philadelphia
Nick Castellanos exercises opt-out clause in deal with Cincinnati Reds to become free agent - ESPN
MLB free agency: Nick Castellanos opts out of Cincinnati Reds contract
Dodgers Trade Rumors: LA Discussing Corey Kluber, Nick Castellanos, News, Scores, Highlights, Stats, and Rumors
MLB trade rumors: Qualifying offers, options, and opt-out tracker - Bless You Boys
Report: Nick Castellanos 'Likely' to Opt Out of Reds Contract, Test MLB Free Agency, News, Scores, Highlights, Stats, and Rumors
Reds agree to four-year deal with outfielder Nick Castellanos
Nick Castellanos' Opt-Out & The Reds' Offseason - MLB Trade Rumors
Nick Castellanos on Silver Slugger Award, possible Reds reunion
Cincinnati Reds: Don't worry about Nick Castellanos' opt-out clauses
Fantasy baseball: Nick Castellanos a sell at fantasy trade deadline