Carroll batted leadoff and went 0-for-3 with a run scored in Saturday's 5-3 loss to the Nationals.
Diamondbacks manager Torey Lovullo tweaked the top of the order, which included moving Carroll from third to leadoff. Carroll entered Saturday in a funk, batting just .186 (8-for-47) over the previous 11 games. Ketel Marte, the primary leadoff hitter who entered Saturday batting .191 since July 9, was dropped to cleanup.