Marcelo Mayer Traded to Giants at 2026 Trade Deadline

Prospect Marcelo Mayer was traded from the Boston Red Sox to the San Francisco Giants at the 2026 trade deadline in exchange for left-handed relief pitcher Erik Miller. Mayer's departure brought high expectations for Miller in Boston's bullpen, though Mayer was part of a major midseason blockbuster between the two clubs as Boston reshaped its roster for the late-season push and postseason run.