Most <83 MPH pitches into the heart of the zone for swinging strikes in the 2019 and 2020 regular seasons?

97 --> Lucas Giolito 🔥🐌 #notatypo
38 --> John Means
36 --> Zach Davies
36 --> Jason Vargas
35 --> Kyle Hendricks

What's this called? Slow shoving? 😐@LGio27 @whitesox pic.twitter.com/OHcj0VrQfD

— Codify (@CodifyBaseball) February 17, 2021