Smith (forearm), who is scheduled to throw one inning in an extended spring training game Saturday, will likely need three appearances in the minor leagues before being activated, the Boston Globe reports.
After Saturday's appearance, Smith is expected to begin a minor league rehabilitation assignment next week. On that schedule, he could be activated from the disabled list around May 3. The ultimate goal is to have him pitch in back-to-back games before the organization adds him to the active roster.