Reds Nick Castellanos opts out of contract becoming free agent
Phillies All-Stars: Nick Castellanos the lone rep – NBC Sports Philadelphia
MLB Rumors: Nick Castellanos, opts out, is a free agent - Lone Star Ball
Reds Slugger Nick Castellanos Could Have Plenty Of Suitors In MLB Free Agency
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Nick Castellanos exercises opt-out clause in deal with Cincinnati Reds to become free agent - ESPN
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Report: Nick Castellanos 'Likely' to Opt Out of Reds Contract, Test MLB Free Agency, News, Scores, Highlights, Stats, and Rumors
Former Reds outfielder Castellanos among those with $100M contracts not on All-Star teams
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