CLEVELAND -- Right-hander Brandon Morrow threw a 25-pitch side session at the Blue Jays' Minor League complex in Dunedin, Fla., but it's still unknown when he will be able to begin a rehab assignment.
Morrow has been out since May 28 because of soreness in his right forearm. The injury was originally expected to keep Morrow out of action for approximately 15 days, but he's unlikely to return before the start of August.
The 28-year-old Morrow will need at least three rehab games, and until he finally takes the mound, it's near-impossible to conceive of a definitive timeline.
"He's feeling good, had a 25-pitch side with no issues and is scheduled to have another side on Friday," a Blue Jays spokesman said via an internal Minor League report.
Right-handed reliever Sergio Santos will make another appearance for Class A Dunedin on Wednesday night. Santos already has two outings under his belt for Dunedin and is hopeful to return shortly after the All-Star break.
The 30-year-old has appeared in just five games for Toronto this year because of a right elbow injury. He later underwent a minor surgical procedure to remove some bone spurs in the area.
Santos needs to pitch on back-to-back days before re-joining the Blue Jays, and so far that's something he has been unable to do.
"He long-tossed out to 150 feet today and said he felt better than yesterday," the club said.
Gregor Chisholm is a reporter for MLB.com. Read his blog, North of the Border, and follow him on Twitter @gregorMLB. This story was not subject to the approval of Major League Baseball or its clubs.