Michael Pineda currently leads all Major League pitchers in WAR, helped in part by Sunday afternoon's 16-strikeout performance.
Pineda has an excellent strikeout-to-walk differential, which has improved by 10 percentage points from 2014.
The New York Yankees hurler hasn't changed his movements or arm slot, and his pitch mix is fairly similar. It seems as though Pineda has simply improved his command.
He was never a wild pitcher, but the improvement in control is one explanation for his dominance.
The 26-year-old has a 2.72 ERA, 1.014 WHIP and 54 strikeouts against just three walks in 2015.