Kansas City Chiefs star running back Jamaal Charles was carted off the field this morning, according to the Kansas City Star.
A few other reports said the injury wasn't serious and that Charles may have sprained his right ankle.
The Chiefs could be just taking precautions with a key player.
Chiefs coach Andy Reid will likely provide an update later after practice.
Meanwhile, rookie offensive tackle Eric Fisher, the top overall pick of the draft, is back at practice despite thumb and shoulder injuries.
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Aaron Wilson covers the Ravens for The Baltimore Sun.