Tiedemann (elbow/neck) walked one in a scoreless inning of relief for Triple-A Buffalo on Wednesday.
Making his first appearance of the season for the Bisons, Tiedemann averaged 96.7 mph with his fastball, per Jesse Borek of MLB.com. The 23-year-old southpaw is expected to remain in the bullpen for the remainder of 2026, but the Blue Jays haven't ruled out trying him in the rotation again next season.