Bieber (elbow) will begin a rehab assignment at the rookie-level Florida Complex League on Monday, Arden Zwelling of Sportsnet.ca reports.
The veteran right-hander is aiming to pitch two innings Monday. Bieber will then build up to three innings in his next outing, according to Zwelling. The Blue Jays will build him up slowly, but Bieber is on track to make his 2026 debut some time in June.