Trevor Rosenthal, out of Lee’s Summit, Missouri, was the St. Louis Cardinals’ 21st round pick in the 2009 MLB draft. What an incredible value Rosenthal has become for St. Louis just four years after the draft. One day, he will most likely become the closer for the Cardinals, but right now, he is making the most out of his set-up man role.
Rosenthal throws straight heat. We all knew this, but how does he compare to other pitchers throughout the league? The average speed of a Rosenthal fastball this season is 96.3 MPH–good enough for fourth among pitchers who have thrown at least 20 innings. Aroldis Chapman is the highest with an average speed of 97.4 MPH–just 1.1 MPH faster than Rosenthal.
Since Chapman is widely considered the gold standard of late-inning relief pitchers, I will further compare Rosenthal to Chapman for the rest…
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