White Sox's Keynan Middleton: Added to roster

The White Sox will select Middleton's contract from Triple-A Charlotte on Monday, Daryl Van Schouwen of the Chicago Sun-Times reports.

Middleton had made three scoreless appearances for Charlotte this season before the promotion. The 29-year-old has had trouble finding his footing in the majors over the last three seasons, holding a 5.10 ERA over 60 innings.