This is also more complex than just this, but, according to PITCHf/x, here are the percentages of pitches Arrieta's thrown in the strike zone in each of the last three years: 2014: 47.0% 2015: 47.9% 2016: 47.1% Hitters are actually making even less contact than they were against him last year, too. He just needs to adjust his game plan according to how hitters are now approaching him, as he talked about in the post-game.