BOSTON — In an absolutely shocking development, the Red Sox have traded Rafael Devers. Devers has been traded to the Giants in a deal that will send multiple pitchers to Boston, according to multiple sources. The out-of-nowhere blockbuster is done.

Who are the Red Sox getting back in exchange for Rafael Devers? Here is a primer on the four players on their way to Boston.

In winning 10 of their last 15 games, the Red Sox vaulted the .500 mark for the first time since May 24, and creeped within 6 ½ games of the front-running Yankees. And now a nine-game trip that includes a visit to San Francisco and old friend Devers looms.