"Last May, I wrote about Palencia's unique fastball shape , and how it worked in concert with his sheer velocity and high-energy delivery to flummox opposing batters. I dubbed that shape "run-ride", in contrast with the more often-discussed "cut-ride" heater."
Matthew Trueblood - What Happened to Daniel Palencia, and Whether It's Fixable
https://northsidebaseball.com/news-rumors/chicago-cubs/what-happened-to-daniel-palencia-and-whether-its-fixable-r3264/