Jose pretty rarely goes to the breaking ball (3.75%) and when he does, it’s almost exclusively as a 2 strike chase pitch (34.8%). It’s most often not successful (20% O-Swing, 4.4% SwStr) with below average break and depth.
Alvarado leans an extreme amount (79.5%) on his exceptionally hard (98.1 mph) sinker which shows below average sink and armside run but still generates a 10.8% SwStr. Overall hitters finished with a 19/11 K/BB ratio and a .348 wOBA against it.
Alvarado is a lefty with plenty of stuff, and his slider goes hand in hand with his sinker in snaring left-handed hitters to chase outside of the plate. He pitched just 39.7% in the zone in 2019 and saw his BB/9 skyrocket from 4.08 in 2018 to 8.10 last season. Ouch!