As the Boston Red Sox traded away a new wave of prospects in the Adley Rutschman deal on Monday, they also said goodbye to one of the headliners of the last wave.Shortstop Marcelo Mayer, the Red Sox's 2021 first-round pick and former No. 1 overall prospect, was reportedly dealt to the San Francisco Giants on Monday just before the 6 p.m. ET trade deadline. Ken Rosenthal of The Athletic was first to report the deal was close. In exchange, the Red Sox got hard-throwing lefty Erik Miller, according to multiple reports. The shortstop of the future is gone with just 114 major league games under his belt, but the Red Sox got an arm they believe can bolster their playoff odds. This story will be updated. Add us as a preferred source on GoogleFollow