The Facts: The MRI performed on Brown on Friday determined that he has a strained left hamstring and he will not participate in practice today.

Diehards Line:With DeSean Jackson playing more productively in the offense than expected (at least early on), Brown might want to pick up the pace on his rehab. Jackson finished with seven catches for 71 yards against the Panthers. Last week, he had a team-high five catches for 51 yards in the Eagles' 16-10 exhibition loss to the Steelers. ... Andy Reid's West Coast offense isn't easy for rookies to learn. But Jackson, who played in a pro-style offense at Cal, has done an excellent job picking it up. And as long as he stays healthy, Jackson will continue to get a lot of reps both in practice and the remaining two preseason games.