Cincinnati Reds offseason: Nick Castellanos doesn't use opt-out clause
MLB Offseason News: Nick Castellanos, among others, to become free agents - Over the Monster
Nick Castellanos set to reject Reds qualifying offer (report)
Nick Castellanos Is Likely to Opt Out of Reds Deal and Become a Free Agent After the Season - Bleacher Nation
Nick Castellanos hits grand slam; umpires check bat
Nick Castellanos a good influence on Reds teammates
Nick Castellanos Signs with Reds: Finally Off the Board – New Baseball Media
The Reds never even gave Nick Castellanos a phone call - Redleg Nation
Cincinnati Reds: Nick Castellanos excited about team's potential
Cincinnati Reds roster: Sign Nicholas Castellanos to a 4-year deal
Heyman: Will Nick Castellanos be too expensive for Jeter-less Marlins?
Cincinnati Reds to sign OF Nick Castellanos to 4-year deal - Red Reporter
Nick Castellanos, Aroldis Chapman in danger of steep declines - Sports Illustrated