The Toronto Blue Jays have activated right-handed reliever Sergio Santos from the 60-day disabled list.
Right-handed starter Brandon Morrow has been placed on the 60-day disabled list to make room on the 40-man roster.
Morrow's season is effectively over after he was diagnosed with a nerve injury in his right forearm last week.
The Jays also announced that right-hander Dustin McGowan has been placed on the 15-day disabled list with a right oblique strain.
Santos appeared in five games this season with Toronto, posting a 0-1 record with a 2.08 earned-run average before being placed on the 15-day disabled list with a right triceps strain on April 14. He then had surgery on this right elbow to remove bone spurs.
In 12 rehabilitation appearances this season, the 6-foot-3, 240-pound pitcher was 0-0 with a 6.17 ERA while pitching for the Gulf Coast League Blue Jays, the Dunedin Blue Jays of the Florida State League and the Triple-A Buffalo Bisons.
McGowan has appeared in 16 games this season without recording a decision while posting a 2.12 ERA.