Hendriks (elbow) will make back-to-back appearances with Triple-A Worcester on Wednesday and Thursday and could be activated from the 60-day injured list as soon as Saturday, Gabrielle Starr of the Boston Herald reports.
Hendriks has allowed just one unearned run over his first four rehab innings, but he averaged just 92.8 mph with his fastball and 83.8 mph with his slider in his last appearance. Both numbers are significant dips from last season and down considerably from Hendriks' peak velocities in past years. That's not terribly surprising given his long layoff after elbow surgery, but the Red Sox might be anxious to put him into high-leverage spots until he rediscovers some velocity.