Mayer was shockingly traded during Monday’s deadline to the Giants for reliever Erik Miller, and more reporting is coming out that might suggest why. Obviously, some of those reports might be organizational cover, but there have been a few reports that suggest Mayer and the Red Sox organization were not seeing eye-to-eye. Mayer has had 364 plate appearances in Boston and posted a .223/.278/.346 slash line with seven home runs and three steals. His season was cut short by injury in 2025, and he’s currently on the injured list with a forearm injury, so that may explain the shorter leash. It sounds like a fresh start may be what the former top prospect needs.