1/9/17: MLB.com Extras | Arizona Diamondbacks - a podcast by MLB.com

As the D-backs start to look toward Spring Training, they still have a few holes to fill. MLB.com's Anthony Castrovince along with D-backs reporter Steve Gilbert break down the options that could be added at catcher and in the bullpen as well as how Jeff Mathis could help Zack Greinke's pitching performance this season.

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