The Rangers placed Seager on the 10-day injured list Wednesday due to lower-back inflammation.
Seager returned from the 7-day injured list last week after recovering from a concussion, but a back issue that will send him to the IL this time. The shortstop missed a month of action with a back injury earlier this season, but it's unclear at this point how long his upcoming stint on the shelf might last. Ezequiel Duran will likely serve as the Rangers' primary shortstop while Seager is sidelined.