What happened: The Red Sox have acquired minor league left-handed pitcher Joe La Sorsa from the Pittsburgh Pirates. Boston sent cash considerations to Pittsburgh to complete the transaction.

Why it matters: Acquiring La Sorsa provides Boston with additional left-handed pitching depth in their minor league system. The Pirates, who have won seven of their last nine games, open a minor league roster spot while securing cash in return.

What to watch: La Sorsa will report to a Red Sox minor league affiliate as the organization assesses his potential role.