"The Eagles' newest free safety is coming off a knee injury and will switch positions to accommodate their defensive scheme.

Sounds a lot like last season's experiment at free safety, and how did that work out?

But the Eagles must believe that defensive back Marlin Jackson, he of the two knee surgeries in a 12-month span, can transition from cornerback to safety better than Sean Jones, last year's free-agent acquisition who was also coming off a knee injury when he signed a one-year deal to compete for Brian Dawkins' old job.

Jones, a natural strong safety, battled third-year pro Quintin Demps and rookie Victor Harris for the free safety gig, a competition that yielded no winner. The spot served as the team's weakest link on defense throughout the season."