San Diego Chargers rookie offensive tackle D.J. Fluker suffered a concussion in practice and didn't practice Thursday with Michael Harris slated to start Sunday against the Tennessee Titans
Harris started nine games as a rookie last season.
Fluker was drafted 11th overall out of Alabama.
Meanwhile, wide receiver Malcom Floyd remains sidelined with a neck injury.
Rookie middle linebacker Manti Te'o was limited again.
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Aaron Wilson covers the Ravens for The Baltimore Sun.