Stokes is out of the lineup for Wednesday's game against the Reds, Kevin Gorman of TribLive.com reports.
Stokes had started the past three games, but he'll likely transition into a reserve role in the outfield after the Pirates recently added veteran Ben Gamel to the roster and returned Gregory Polanco from the COVID-19 injured list. Polanco, Bryan Reynolds and Ka'ai Tom will likely form the Pirates' everyday outfield for the time being.