Houck (face), who is beginning a rehab assignment Saturday with Triple-A Worcester, will be stretched out and is expected to rejoin the Red Sox as a starter, Jen McCaffrey of The Athletic reports.
Houck has been sidelined since mid-June, so he will likely need multiple rehab appearances to build up his stamina, potentially setting up a mid-August return. Garrett Whitlock (elbow) will return as a multi-inning reliever.