Contreras is out of the lineup for Sunday's game against the Reds.
Contreras started the previous six games and will get a breather Sunday after going 7-for-25 (.280) with four doubles, a homer, four RBI and six runs during that stretch. He has a 1.011 OPS with 11 extra-base hits in his past 18 contests. Bo Naylor will make his Brewers debut in the series finale at Cincinnati in Contreras' place.