Wade (hamstring) will begin a rehab assignment with Triple-A Sacramento on Sunday, Maria I. Guardado of MLB.com reports.
Wade has been on the injured list since the end of May due to a Grade 2 left hamstring strain. The Giants haven't indicated how long Wade will remain on assignment at Triple-A, but considering he has been sidelined for nearly a month, it's likely he'll need to play a handful of games with Sacramento before returning from the IL.