Houck (elbow) threw a bullpen session Saturday and is slated to throw another one later this week, Chris Cotillo of MassLive.com reports.

EDGE Analysis

Houck has taken a step forward in his rehab after previously being limited to flat-ground work. The right-hander is working his way back from a right flexor pronator strain and will undoubtedly require a rehab assignment before rejoining the Red Sox.