Rupp is not in the lineup for Saturday's game against the Diamondbacks, Stephen Gross of the Morning Call reports.
The 27-year-old has started five of the last seven games for the Phillies and will take a day off as Carlos Ruiz mans the catching duties. Rupp went 2-for-4 with a triple and two RBI on Friday to earn his first multi-hit game since June 5. He will likely be back in the lineup for Sunday's matinee.