Kansas City Royals starting pitcher Danny Duffy.
Kansas City Royals starting pitcher Danny Duffy. John Sleezer jsleezer@kcstar.com
Kansas City Royals starting pitcher Danny Duffy. John Sleezer jsleezer@kcstar.com
The K Zone

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The K Zone

July 20, 2016 2:46 PM

Here’s how Royals pitcher Danny Duffy is evolving

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