Before the Red Sox designated him, the 28-year-old O’Sullivan made his second major league start of the year Sunday. In a 10-9 win over Houston, O’Sullivan threw 4 1/3 ugly innings, allowing five earned runs on six hits – including two home runs – along with three strikeouts and two walks. O’Sullivan’s first start, in Boston’s 13-5 victory over Oakland this past Tuesday, was a more successful outing. He still surrendered 12 hits and four earned runs in six innings, however. All told, O’Sullivan threw 11 1/3 innings for the Red Sox prior to today and compiled an unsightly 7.94 ERA.
In parts of seven big league seasons, O’Sullivan has racked up 309 1/3 career major league frames and pitched to a 5.96 ERA. His struggles have come thanks in part to a lack of strikeouts, as O’Sullivan has averaged just 4.34 per nine innings.