9/1/17: Arizona Fall League Rosters - a podcast by MLB.com

On this edition of the podcast, MLBPipeline.com's Jonathan Mayo interviews Pirates top pitching prospect Mitch Keller to find out what he hopes to improve on during his stint in the Arizona Fall League and the pressure of pitching in the playoffs. Mayo is later joined by MLBPipeline.com's Mike Rosenbaum to preview the players they are most excited to see in the upcoming Arizona Fall League.Learn more about your ad choices. Visit podcastchoices.com/adchoices

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