For the better part of a day, a rumor swirled that the Red Sox had traded Marcelo Mayer for Ketel Marte. The speculation reached chief baseball officer Craig Breslow, who quickly shut it down, calling the report “blatantly false,” according to Alex Speier of the Boston Globe. Speier posted Breslow’s full quote on Bluesky.
This afternoon, there was buzz that Marcelo Mayer had been traded to the Diamondbacks. Officials with both the Red Sox and D…