Since entering professional baseball in 2014, Marysville Pilchuck High School graduate Matt Cooper’s strikeout numbers have been off the charts. Here’s his numbers over the past four seasons:
Those strikeout-per-nine-inning numbers — 12.7 this season, 11.8 throughout his minor-league career — are impressive. How much so? For reference, here’s a chart of 2017 qualifying pitchers throughout all of Minor League Baseball ranked by strikeouts per nine:
So through Monday Cooper was ranked sixth among all regular minor-league starters in strikeout rate.