Macko underwent arthroscopic surgery Thursday to repair a meniscus tear in his left knee, Shi Davidi of Sportsnet.ca reports.
Macko has a meniscus tear in his left knee that will likely require surgery, Shi Davidi of Sportsnet.ca reports.
Macko (forearm) was reinstated from Double-A New Hampshire's 7-day injured list Sept. 11 and promoted to Triple-A Buffalo on Tuesday.
Double-A New Hampshire placed Macko on its 7-day injured list Saturday with left forearm soreness, Arden Zwelling of Sportsnet.ca reports.
Macko could get promoted to Triple-A Buffalo in the near future, Keegan Matheson of MLB.com reports.
The Blue Jays selected Macko to their 40-man roster Tuesday.