Henderson is not in the Orioles' starting lineup against the Athletics on Friday, Andy Kostka of TheBanner.com reports.
Henderson will have a rare off day while Blaze Alexander -- who was reinstated from the injured list Friday -- will start at shortstop and bat out of the leadoff spot. Henderson has a .217 batting average (18-for-83) in August with two steals, two home runs, five RBI, 15 runs scored and a 17:15 BB:K.