 Up to that point, Peterson was cruising. He had not allowed a base runner for Altoona. It struck out four in a row, first down to the fifth, and Chang doubled on the first pitch of the at-bat. He fouls the next one off his front foot. And the next pitch thrown was a two-run homer by Joe Perez. I believe Chang doubled on a changeup, trying to go down and away to the left-handed batter, and he was able to read it.