Crochet (shoulder) threw a 16-pitch bullpen session Friday, Ian Browne of MLB.com reports.
Crochet threw exclusively fastballs in what marked his first time pitching off a mound in over three months. He's scheduled for anther bullpen session Tuesday before potentially facing hitters soon thereafter. The Red Sox still envision Crochet serving as a starter in the long run, but he'll be used as a reliever if he makes it back from the 60-day injured list later this season.