The reaction to Marcelo Mayer’s long-awaited promotion to the Boston Red Sox was sweet, short, sincere and swift – all at the same time. Mayer, an infielder ranked as the No. 8 prospect in baseball and No.

In a move that likely signals Alex Bregman is headed for the injured list due to a quad injury, the Boston Red Sox are bringing up star prospect Marcelo Mayer from Triple-A.

At the time of the 2021 Draft, Mayer was considered both the best hitter and the best defender available, with one scout likening the Eastlake HS (Chula Vista, Calif.) product to a combination of Cor...