Foreman (knee) was carted off during Monday's practice with his left leg in an air cast, Paul Gutierrez of ESPN.com reports.
Gutierrez also reported that Foreman's knee injury was of the non-contact variety, suggesting the undrafted wideout could miss substantial time. Foreman likely had only an outside shot of making the Raiders' 53-man roster before this injury, but his chances now seem to be slim to none.