Grandal will start at catcher and bat seventh in Monday's game against the Marlins.
Though he's included in the starting nine Monday, Grandal is expected to move into the No. 2 role at catcher after the Pirates reinstated top backstop Joey Bart from the injured list Friday. Grandal is slashing .333/.469/.569 since the beginning of August, but his .681 OPS on the season still lags well behind Bart's mark of .848.