FanGraphs’ David Laurila talks with pitchers about learning and developing new pitches, and in this installment Danny Duffy is one of them:
“My changeup used to be a two-seam circle. It was a really good pitch in the minor leagues because of the difference in velocity — I could get away with lack of movement — but, up here, it was starting to get ineffective.
“I watched Edinson Volquez in a super slo-mo , how he gripped his, and I was like, ‘That looks pretty good.