Kansas City Royals relief pitcher Kelvin Herrera has been working out in Arizona since mid-January.
Kansas City Royals relief pitcher Kelvin Herrera has been working out in Arizona since mid-January. File photo by John Sleezer jsleezer@kcstar.com
Kansas City Royals relief pitcher Kelvin Herrera has been working out in Arizona since mid-January. File photo by John Sleezer jsleezer@kcstar.com