The 2019 version of Mike Zunino is a different hitter than the pre-2019 version of Mike Zunino. This becomes apparent when you look at his plate discipline stats.
From 2016 to 2018, Zunino had a swing rate (rate at which he swung at all pitches) of 48.8%. This year his swing rate is 53.3%. From 2016 to 2018 he had a contact rate (rate at which he made contact with the pitches when he swung) of 64.2%. This year it’s jumped to 74%.
That’s a marked change in swing rate and contact rate in 2019. We should pay attention to those!