The San Francisco Giants and Boston Red Sox reach an agreement that sends left-handed reliever Erik Miller to Boston in exchange for former Red Sox top prospect Marcelo Mayer, according to multiple reports. The Athletic and Yahoo Sports both cite sources indicating the trade is close to completion and describe it as a deadline move that reshapes each club’s player pipeline and bullpen needs. The reports specify the core exchange: Miller joins the Red Sox, while Mayer is acquired by the Giants.
Miller’s current season performance is referenced in one report, listing him as 2–0 with a 2.75 ERA at the time of publication. While details beyond the primary players are not provided in the excerpts, the reporting consistently frames the transaction as a prospect-for-reliever swap. Neither outlet’s summary indicates a change in role expectations for either player beyond the team they will play for next.
