Borucki became a permanent part of the Blue Jays rotation at the end of June when he made his major league debut. Since then, he has made 12 starts for Toronto with mixed results. He dominated over his first several starts, but opposing teams have caught up to him as of late. Over his last five starts, he has surrendered 21 runs over 20 1⁄3 innings pitched.
His last outing was on the 29th in Baltimore when he allowed five runs on eight hits, while he walked none and struck out two over 4 2⁄3 innings pitched.