Mervis is out of the lineup for Thursday's game against the Diamondbacks.
With southpaw Eduardo Rodriguez taking the hill for Arizona, Mervis will be one of three left-handed-hitting Marlins regulars who will retreat to the bench. Eric Wagaman will pick up a start at first base in place of Mervis, who has gone 9-for-25 with six home runs and 11 RBI over his last eight games.