Since May 15 Nick Yorke has seen a surge in offense. During that time he has a batting average of .348 and an OPS of .827. He also has a whiff rate 23.7%
Before May 15, Nick Yorke same slash line is .243/.678/26.7%. Before May 15, he saw the 4-seam around 20.6% of the time, the slider 11.2% of the time, the sinker 8.6% of the time, the cutter 7.7% of the time, and the curve 5.5% of the time. After May 14, he has seen the 4-seam 15% of the time, the sinker 5.3% of the time, the slider 5.2% of the time, the cutter 2.7 percent of the time, and the curveball 2.1 percent of the time. You'll notice these pitch types can't add up to 100%. That is because not all AAA fields have pitch tracking. But we can take the percentage of the pitch type known and add those to estimate the number of pitch types seen overall.
That means After May 14, Yorke has seen the 4-seam fastball almost 50% of the time. Before May 15 Yorke saw the 4-seam fastball 38% of the time. However, Yorke has been hitting almost everything better After May 14. Before May 15, Yorke's OPS against the 4-seam fastball .766 and after May 14 it is 1.101. This came with a slight uptick in whiff rate against the 4-seam. Yorke's biggest struggle pitch, the slider, is actually his best pitch type After May 14 carrying an OPS of 1.334 with a reduced whiff rate of 28.6%. Before May 15, Yorke produced an OPS of .378 and a 35.9 whiff rate. Again, these stats come from the pitches that happen at fields with statcast pitch tracking. But these are huge improvements none-the-less.
Yorke's hard hit percentage After May 14 has significantly decreased for all major pitches except for the 4-seam fastball. It seems he is swinging hard when he identifies a fastball and is holding back some against break. So far it has been working. We should keep an eye on him going forward because if you look at his expected metrics After May 14, they are much lower than his actual results. His expected OPS against the slider After May 14 is .606 which is much lower than his actual OPS of 1.334. This could be part of the plan having Yorke focus on contact against breaking pitches and sell out against the 4-seam.