Vance Worley interview on Fangraphs
Q&A: Vance Worley, Deceptively-Diverse Twin | FanGraphs Baseball
Worley says he has 6 pitches in his armory but his best 2ndary pitch is a cutter
DL: What is your best secondary pitch?
VW: Probably my cutter. I throw it like a cutter, but it moves more like a slider. You can call it whatever you’d like. The pitch has two-plane action. It slides and it falls out.
It is basically a cutter that morphed into a slider. I throw it the way you’re supposed to throw a cutter, but it moves like a slider. Everybody is different. Everybody has different arm slots when they pitch, and that’s how mine breaks.
My four-seam, with a big-league ball, has cut movement. With a minor-league ball, it won’t cut. I guess I have a four-seam cutter and a cutter/slider.