One thing that's really stuck out to me between WBC, ST, and the early AAA season is Black seems to be hunting FB trying to do damage on them. I think I remember an article in ST talking about him wanting to be more aggressive at the plate this year? Mixed results so far. He did hit the HR against a FB yesterday but between ST, WBC, and AAA he's chasing around 35% on the year which is well above the 21% chase rate he had in AAA last year. I'd guess it will take a bit to adjust to being more aggressive and honing in the chase. I think a change like this is probably necessary for him to pan out in MLB.