Upton was placed on the 10-day injured list Sunday with a right lumbar strain.

The back injury kept Upton out of action Saturday and will now put him on the shelf until Sept. 14 at the earliest. It's unclear whether the 33-year-old will be back when eligible or if he'll require a more extended stay on the IL. Juan Lagares figures to get frequent starts in the corner outfield positions while Upton is out.

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