Mervis is out of the lineup for Thursday's game against the Astros.
Following his promotion from Triple-A Iowa on Tuesday, Mervis served as the Cubs' designated hitter in both of the ensuing two games, going 0-for-6 with three strikeouts between those contests. Though he'll retreat to the bench Thursday, the lefty-hitting Mervis will likely see the bulk of the starts at DH against right-handed pitching until the Cubs get Seiya Suzuki (oblique) back from the 10-day injured list.