Nick Castellanos, Phillies Finalize 5-Year, $100 Million Contract - CBS Philadelphia
Nick Castellanos declines qualifying offer
MLB free agency: Nick Castellanos opts out of Cincinnati Reds contract
Nick Castellanos opts against opting-out of Cincinnati Reds contract - Red Reporter
Reds' Castellanos suspended 2 games in Hill's 1st discipline
Phillies sign Nick Castellanos to 5-year, $100 million contract – NBC Sports Philadelphia
Nick Castellanos, the delayed 2020 season, and how opt-out clauses will impact Reds moves - Red Reporter
Reds Slugger Nick Castellanos Could Have Plenty Of Suitors In MLB Free Agency
Nick Castellanos opt out rumors: Reds outfielder elects to become a free agent, per report - DraftKings Network
Castellanos opts out of contract with Reds