Swanson (forearm) was activated from the 15-day injured list by the Blue Jays on Tuesday, Hazel Mae of Sportsnet reports.
Swanson got a late start to the season because of right forearm inflammation but has been cleared to return following three rehab appearances. He is in line for a setup role in the Blue Jays' bullpen, although it's possible he'll be eased back into high-leverage situations.