Souhan had an article on Pelfrey today that ties in nicely with this thread: http://www.startribune.com/twins-pelfrey-displaying-that-look-of-an-ace/306434991/ I thought the origin of his splitter was interesting: Even last year, Pelfrey felt numbness in his fingers and “didn’t know where the heck the ball was going.” He began to find more life in his pitches while throwing during the winter. During spring training, Pelfrey asked new bullpen coach Eddie Guardado to show him his proprietary grip. “He looked at my grip and said, ‘Man, that will never work,’ ” Pelfrey said. “I looked at his grip and said, ‘Man, that will never work.’ ” Pelfrey fiddled with Guardado’s recommendation and suddenly had a change-of-speed pitch to complement his mid-90s fastball and sharp slider. “That splitter has been so big for me,” he said.