The Pirates are expected to call up left-hander Jeff Locke to start Saturday against the Brewers. Locke, not Kyle McPherson, will take Erik Bedard's spot in the starting rotation. A.J. Burnett was previously expected to start, but he'll presumably be pushed back to Sunday. Locke made two appearances with the Pirates earlier this month and owns a 2.48 ERA and 131/43 K/BB ratio over 141 2/3 innings this season at the Triple-A level.