The Marlins have placed right-hander Elieser Hernandez and first baseman/outfielder Garrett Cooper on the 10-day injured list, the team announced.  (Jordan McPherson of the Miami Herald was among those to report the details.)  Hernandez was placed on the standard 10-day IL while Cooper is on the COVID-related injury list.  Right-handers Nick Neidert and Jordan Holloway will fill the two open spots on the active roster.

Cooper was placed on the IL due to an adverse reaction after receiving a second dose of a COVID-19 vaccine, a fairly common side effect for some vaccinated patients.  Because there is no 10-day minimum attached to the COVID list, Cooper could be back in action as early as Tuesday if he is feeling better, though the Marlins chose to sideline him.

Hernandez’s injury could be much more of a long-term problem, as his outing on Saturday was cut short in the third inning due to inflammation in his right biceps area.  More will be known about his status once Hernandez completes a doctor visit later today.