That's sort of irrelevant. They were called balls. And they were hardly center cut fastballs. Sometimes you don't get the corner. Even then, Arrieta had retired 7 straight and wasn't laboring, having him start an inning with 90 pitches against the bottom half of the order is perfectly fine. Well I disagree considering they already gave him an extended break at the ASB, presumably to deal with/prevent fatigue and he was exhausted by the postseason last year. Clearly workload is a consideration with him, and whether or not it's the bottom of the order, a one run game inherently means a high stress inning. If you go through the effort to build a shutdown bullpen, this is exactly the circumstance you use it.