ALDS Game 3: Red Sox (Eovaldi) @ Yankees (Severino)

theathletic.com/585330/2018/10/12/theres-video-evidence-that-luis-severino-was-tipping-his-pitches-in-the-playoffs-and-well-before-then/

In this at-bat to Holt, Severino throws four fastballs and one changeup. The pre-pitch routines for three of the four fastballs are shown in full on the broadcast. (On the one that is not shown, the camera is settled on Bradley predicting the pitch in the dugout, as seen above.)

On all three fastballs for which we can watch the entire pre-pitch setup, Severino checks the runner on second, then he looks off toward third base as if resting for a moment, then turns his head the rest of the way toward the batter and fires home. That hesitation before turning fully toward home is his tell. Here are the three fastballs in Holt’s at-bat. Notice how Severino always looks to third base. (There is no runner on third base in this situation, but because his body is facing third from the stretch, it is a natural resting point.)

When he throws his changeup, the lone offspeed pitch in the at-bat, he checks the runner at second then whips his head all the way around to home plate in one motion and throws. He never pauses to look toward third.

And just for good measure, here is every slider Severino threw with the lead runner on second in both of his 2018 playoff starts. He never once stops to look toward third, instead turning his head from second to home all at once.