Cooper was scratched from the lineup Thursday against the Red Sox due to an illness, Jordan McPherson of the Miami Herald reports.
Jorge Soler will slide into DH duties with Yuli Gurriel sticking at first base and Jesus Sanchez being added to the lineup in right field. Cooper can safely be considered day-to-day as the Marlins wrap up this series at Fenway Park before heading to Atlanta for a three-game weekend set.