Macko (forearm) was reinstated from Double-A New Hampshire's 7-day injured list Sept. 11 and promoted to Triple-A Buffalo on Tuesday.
Macko had been on the shelf at Double-A since July 6 with a left forearm injury before beginning a rehab assignment with Single-A Dunedin on Aug. 24. After three rehab starts with Dunedin, Macko returned to action for New Hampshire on Sept. 11, tossing four innings while allowing six runs in a loss to Somerset. Despite the poor showing, Macko moved up to Buffalo and made his Triple-A debut Tuesday, when he struck out three while allowing three runs on four hits and three walks over three innings.