The Blue Jays claimed Heineman off waivers from the Red Sox on Monday.
Heineman has a minor-league option remaining, but he appears set to join the Blue Jays' 28-man active roster after Toronto designated its backup catcher (Brian Serven) for assignment in a corresponding move. The 33-year-old Heineman will be beginning his third stint with Toronto after spending time in the organization during the 2022 and 2023 seasons.