As Fastballs Fade, Establishing the Fastball Rides On

Last week, pitching prospect Grayson Rodriguez was asked a great question on The Baseball Barb-B-Cast. Rodgriguez is ranked third in an excellent Baltimore system, and as a player who was drafted in 2018, his tenure with the club spans both the Dan Duquette and Mike Elias eras. The question was: How has the organization changed over time?
Rodriguez started his answer with, “Everything about the organization changed but the name.” He touched on technology, pitch development, and the turnover in the coaching staff, but the part I want to focus on came right at the beginning, when he was describing the Duquette era: “Our pitching philosophy was, it was like, ‘Hey, you know, as a starter we’re going to go out in the first three innings and we’re just going to throw nothing but fastballs, and we’re going to see if that works.’ And, like, terrible. Terrible idea.”
Yup. That does indeed sound like a terrible idea. It also made me wonder whether teams are as focused on establishing the fastball as they once were. A reduction in first inning fastball rate would make sense for a couple reasons. First, fastball usage has dropped overall as teams have learned that pitchers should throw their best pitch more often, and fastballs themselves have become less effective:











