Red Sox Shift Rookie Campbell to First Base, Opening Path for Mayer

The Boston Red Sox are experimenting with rookie Kristian Campbell at first base following the season-ending injury to Triston Casas, as the team seeks internal solutions to fill the position. Campbell, who primarily plays second base and has also appeared in the outfield, is undergoing workouts at first base despite never having played there before, aiming to provide defensive flexibility and open up second base for top prospect Marcelo Mayer. Mayer, a natural shortstop and highly regarded prospect, is seen by analysts as best suited to remain at shortstop rather than being shifted to second base, where veteran Trevor Story currently plays. Campbell's recent offensive struggles have raised some concerns about his transition, and some fans question the wisdom of moving him to a position unfamiliar to him mid-rookie season. Meanwhile, Rafael Devers declined a request to move to first base, making Campbell's potential position change more critical. The move could facilitate Mayer's Major League debut and address multiple roster needs for the Red Sox.