Polanco is out of the lineup Sunday against the Angels to rest his lower back, Do-Hyoung Park of MLB.com reports.
Polanco has recently been playing through the back issue, so he'll receive the day off for the series finale to help manage the injury. The 28-year-old's performance hasn't seemed to be affected by the injury, as he has a 1.006 OPS in nine games since the All-Star break. Nick Gordon will work at the keystone in his place Sunday.