Schlittler, 24, became a household name after a dominant performance in the Yankees’ 4-0 victory over the Red Sox. On Friday, as the Yankees were preparing in Toronto, Schlitter expressed his thoughts that some Red Sox fans “crossed the line” with social media posts attacking members of his family. A Red Sox fan growing up, Schlittler still roots for other Boston professional teams. But that paled in comparison to the dagger he delivered to the Red Sox and their fans. “But at the end of the day,” Schlittler said, “there’s not much they can say now.”“I wasn’t really expecting it to go that far,” he said.