The initial reaction from onlookers was that Jackson, who has torn each anterior cruciate ligament in the last two years, had done something severe to his right leg. The report after practice was that Jackson had suffered a right ankle injury. Later on Tuesday afternoon, after Jackson had an MRI, the official report was that he suffered a ruptured right Achilles tendon, and, well, he is cursed with yet another injury.
Jackson, a former first-round pick who played his first five NFL seasons with the Indianapolis Colts, was signed by the Eagles in March and had been playing as the starting free safety in practice. There is no timetable set for the injury.
Second round pick Nate Allen and veteran Quintin Demps are expected to be bumped up the depth chart with Allen presumed to fill the starting role throughout the rest of training camp.
"It's tough for Marlin. I have to get in the playbook and keep preparing like I have been," said Allen. "I'm picking up everything pretty well, learning a lot from the older guys, asking a lot of questions. I'm pretty happy with where I'm at right now, but I can always improve."