Master · 2000-2012 · left-handed
Johan Santana
A circle changeup widely called the best of its era, built entirely on looking exactly like the fastball.
Signature pitchCircle changeup
Santana’s 2000s peak ran on a circle changeup that scouts and hitters called the best of its era. Its deception came not from exotic movement but from identical arm action, release point, and effort, so hitters committed early and the ball arrived more than ten mph slower than they expected. He won the AL Cy Young unanimously in 2004 and 2006.
A circle changeup launched with arm action, release point, and effort indistinguishable from his low-90s fastball, so the two looked like twins until the change arrived late and slow with fade down and away from righties. By one pitch-value measure he is the career leader in changeup value since tracking began in 2002.
The circle changeup seam, our own schematic
The whole design was disguise. The Twins sent him to Triple-A in 2002 specifically to force-feed the changeup, where a coach made him throw one to nearly every hitter until he trusted it completely. The reputation said a 15-to-20 mph gap; the 2007 tracking data put the real fastball-to-change gap near 10 mph, meaning the deception, not the separation, is what made it elite.
A real, sourced tension worth keeping: Bret Boone and scouting lore cite a 15-20 mph gap; PITCHf/x measured about 10 mph in 2007.
“I was challenging myself and forcing myself to take command of that pitch.”
On developing the changeup at Triple-A Edmonton in 2002.
Led the majors; won the AL Cy Young unanimously.
Close to a normal MLB changeup separation, and well under the 15-20 mph the pitch was reputed to have.
Filed the way every record here is: each figure season-stamped where it applies, confidence-labeled, and one click from its source. Where the reputation and the data disagree, the gap is shown, not smoothed over.