Smith (forearm) will pitch Thursday in an extended spring training game, WEEI.com reports.
Smith is scheduled for his first game action since mid-March, with another appearance likely coming Saturday. He's then expected to join a minor league affiliate next week, setting him up for a return to the majors at the very end of April or in early May. Smith will compete with Koji Uehara and Junichi Tazawa for late-inning work ahead of closer Craig Kimbrel.