Diamondbacks' Blake Walston: Promoted Sunday

The Diamondbacks recalled Walston from Triple-A Reno on Sunday.

The left-hander was activated from the injured list in mid-August after missing two months due to an elbow issue, but he was immediately sent to Triple-A. Walston has started in two of his three appearances with Arizona this season, but he's likely to work in a long-relief role this time around.