TORONTO -- Marco Estrada suffered an unexpected setback in his return from a strained glute muscle when he was forced to leave Tuesday's rehab start with a blister on his right middle finger.
Estrada is technically considered day to day, but it's not immediately clear when he will be able to resume his rehab assignment with Triple-A Buffalo. The veteran right-hander was expected to rejoin the Blue Jays' rotation as early as this weekend in Chicago, but that no longer seems realistic.
The 35-year-old has been out since July 3 with the glute injury.
Estrada exits game in the 1st Estrada left Tuesday's start in the fourth inning after he allowed three runs on three hits and two walks while striking out three.