Merryweather (oblique) will begin a rehab assignment at Low-A Dunedin on Wednesday, Scott Mitchell of TSN.ca reports.
Merryweather has been on the injured list since April 14 and has experienced several setbacks in his recovery process, but the start of his rehab assignment indicates that he's nearing his return to Toronto's bullpen. The right-hander will throw one inning during his first rehab appearance and will likely require several minor-league appearances following his lengthy absence.