Pedro Astacio pitched four scoreless innings for Double-A Portland yesterday.
The 34-year-old righthander, who allowed only three hits and a walk in a 4-3 victory over Trenton, will likely make two starts a Class AAA Pawtucket, and if all goes well, could join the Red Sox staff next month. Astacio may be used as a spot starter or long reliever if he makes it to Boston in September.