i've been watching BA's at-bats closely since he's taken over the starting role, and one thing i've noticed (primarily) is he's not chasing the breaking balls away
watch his at-bats yesterday against halladay, he was being busted inside over and over with that two-seam fastball, and then halladay would go off the plate away with what looked like a cutter or some type of breaking ball (maybe a slider), and BA would lay off of them
in all of his at-bats, it looked as though he knew he was being set up by the pitcher, they were nice to see and unlike any other AB's i've seen him take as a sox player