Fermin is out of the lineup for Sunday's game against the Dodgers.
Since he was activated from the 7-day injured list Tuesday, Fermin has started twice behind the plate while Rodolfo Duran has caught the other three games. Though he has a longer track record at the big-league level, Fermin could be used in a timeshare with Duran until he's further removed from the concussion he sustained June 13.