The Pirates traded La Sorsa to the Red Sox on Thursday, Ari Alexander of 7 News Boston reports.
La Sorsa will be active Friday for the Red Sox while they are in New York playing the Yankees. The southpaw exercised his upward-mobility clause at the end of May, and he'll now get a look in the majors with Boston. The Pirates are receiving cash considerations in return, per Colin Beazley of the Pittsburgh Post-Gazette.