Deaton suffered a knee injury during Monday's practice and was carted off the field, Chris Easterling of the Akron Beacon Journal reports.
The Browns' center position has taken a hit during camp. The team lost starter Nick Harris to a knee injury in the preseason opener against Jacksonville that could end his season, and now Deaton may have suffered a serious injury as well. Ethan Pocic was elevated to starting center, while Hjalte Froholdt was the first man up on the second team.