The Blue Jays transferred Kirk (thumb) from the 10-day injured list to the 60-day IL on Wednesday.
Kirk has been on the shelf since April 4 while recovering from left thumb surgery and isn't expected to head out on a rehab assignment until next weekend at the soonest, so his placement on the 60-day IL won't affect his timeline to rejoin the Blue Jays. The transaction will clear up a spot on the 40-man roster for right-hander Austin Voth, who had his contract selected Triple-A Buffalo in a corresponding move.