2:01pm: Miami will actually activate Martin Prado at this time, per an announcement. The club also added righty Ben Meyer and placed fellow right-hander Tayron Guerrero on the 10-day DL. Presumably, Cooper will be brought back in short order.
Prado struggled badly to open the season and has dealt with significant injuries of late, so it’s hard to imagine him as a mid-season trade candidate. Still, he could conceivably turn into an August target if he performs well. The Miami organization would surely like to get out from under some of his hefty salary ($13.5MM this year and $15MM next), though most of it will surely remain on their books regardless.
12:27pm: The Marlins are set to designate outfielder JB Shuck for assignment, according to Craig Mish of Sirius XM (Twitter link). His roster spot will go to Garrett Cooper, who’ll be activated from the disabled list.
Shuck, 31, has struggled at the plate in his action this year in Miami. Through 142 plate appearances, he carries only a .192/.255/.231 batting line. He has hit a bit more in past seasons, but in the aggregate is only a 72 OPS+ hitter in 1,232 trips to the plate in the majors.
As for Cooper, 27, he’s finally ready to return after suffering a fractured wrist on a hit-by-pitch early this season. The Marlins had picked him up from the Yankees over the winter in hopes that he’d make good on the promise he showed in the 2017 season. Cooper ended up posting a .359/.423/.634 slash in 350 total plate appearances in the upper minors last year and also hit well in his first, brief stint in the big leagues.