Boyd (elbow) is scheduled to make another rehab start for Triple-A Columbus on Wednesday, Chris Assenheimer of the Elyria Chronicle-Telegram reports.
The upcoming start will be the fifth and possibly final outing of Boyd's rehab assignment before he's activated from the 15-day injured list. The left-hander has been recovering from Tommy John surgery but has flashed increased velocity to go along with strong results during his rehab stint. With Alex Cobb (hip/shoulder) slated to return from the 60-day injured list this weekend and Carlos Carrasco struggling, it's unclear how the Guardians will fill out the tail end of their rotation once Boyd is activated.