Jackson is out of the lineup for Monday's game against the Mariners.
Jackson had been handling a near-everyday role for the first two months of the season, but his playing time has dropped off considerably since Jackson Holliday was reinstated from the injured list May 18. The Orioles will keep Jackson on the bench for an eighth straight game Monday, marking by far the longest stretch he's been out of the lineup all season after he previously went no more than two games without a start.