Swanson (forearm) threw 10 pitches off a mound Tuesday, MLB.com reports.
Blue Jays manager John Schneider said Thursday that Swanson will be "a little behind" due to right forearm fatigue, Keegan Matheson of MLB.com reports.
Swanson agreed to a one-year deal with the Blue Jays on Friday to avoid arbitration, Shi Davidi of Sportsnet.ca reports.
The Blue Jays recalled Swanson from Triple-A Buffalo on Friday, Kaitlyn McGrath of The Athletic reports.
The Blue Jays are considering recalling Swanson from Triple-A Buffalo soon, Arden Zwelling of Sportsnet.ca reports.
The Blue Jays optioned Swanson to Triple-A Buffalo on Tuesday.
Swanson gave up a run on two hits in a third of an inning Monday to record his fifth hold of the season in a 5-1 win over the White Sox.
Swanson (0-1) took the loss Wednesday against the Yankees, allowing three runs on three hits in a third of an inning.
Swanson (forearm) was activated from the 15-day injured list by the Blue Jays on Tuesday, Hazel Mae of Sportsnet reports.
Swanson (forearm) is likely to be activated from the injured list Tuesday, Ben Nicholson-Smith of Sportsnet.ca reports.