Contreras is out of the lineup for Sunday's game against the Guardians, Chris Cotillo of MassLive.com reports.
Contreras will receive a breather Sunday after a run of 16 straight starts, during which he posted a .344/.394/.590 slash line with two doubles, two triples, three homers, 10 RBI and seven runs. Mickey Gasper will shift to first base while Carlos Narvaez picks up a start behind the plate in the series finale at Cleveland.