Pirates activated RHP Phil Irwin from the 60-day disabled list. The 26-year-old right-hander suffered an elbow injury in early June and was forced to undergo ulnar nerve transposition surgery which wiped out the rest of his season. He returned to game action on Friday, notching three scoreless innings for Scottsdale in a victory over Glendale in Arizona Fall League action. He threw 39 pitches in the outing, 29 of them for strikes.