Davis will start at catcher and bat ninth in Wednesday's game against Atlanta.
Davis had already started behind the plate in two of the Pirates' previous three games, but Endy Rodriguez's (glute) move to the 10-day injured list Wednesday will clear the way for the former to serve as the team's primary backstop through the All-Star break. For the season, Davis is slashing an abysmal .155/.250/.323 slash line, but he's been much better since the beginning of June with a .758 OPS over 17 games.