Roundup: Defensive issues

Taking a spin through the headlines as the Packers take the field for the week's final practice ...WORTH READING* Coming off a poor run-stopping performance against Cincinnati and RB Cedric Benson, the Packers defense is set to face two of the NFL's elite backs in consecutive weeks: St. Louis' Steven Jackson and Minnesota's Adrian Peterson.* Derrick Martin is expected to start alongside Nick Collins at safety on Sunday, but given the injuries that have hit the position, the Packers plan to get newcomer Matt Giordano ready as well.* Rob Demovsky chatted live with readers on Thursday.THE OTHER SIDELINE* Through two weeks, no team has fewer points than the Rams.* The Rams' third-down defense also is struggling.FROM THE METRO DESK* The Packers are warning fans about the latest ticket scam.COMING UP* Rob Demovsky will have updates on practice and the injury report in a bit. * The Packers depart for St. Louis on Saturday. Sunday's kickoff is at noon.-- Tom Pelisser...