Instead of becoming the rock the bullpen desperately needed, Kelvin Herrera’s play took a sizable step backward last season. After avoiding arbitration, with a new deal in hand, will he improve enough for the club to keep him through 2018?
It has now been over six years since Kelvin Herrera made his Royals debut, with many highs and many lows to remember. His 2014 and 2016 seasons left Royals fans salivating and excited for the next year to begin, while his 2017 season left a sour taste in everyone’s mouth.