Who's missing from first post-bye practice?

ALAMEDA -- The Raiders' first post-bye practice looked fairly similar to their last workout before the four-day break.There were no new faces to be seen during the media window of practice, though defensive tackle Richard Seymour was back after missing Wednesday. And the same injured players were still missing in cornerback Shawntae Spencer (right foot), right tackle Khalif Barnes (groin) and tight end Richard Gordon (hamstring).There was also no sign of linebacker Aaron Curry, whose injured knees have had him on the PUP list since Aug. 31, or cornerback Ron Bartell, who was designated to return by being placed on the new reserveinjured list with a broken left shoulder blade on Sept. 15.Curry has to miss the first six weeks of the season and can begin practicing on Oct. 16. But within 21 days of his first practice, he must be activated, waived or placed on season-ending Injured Reserve by the Raiders.Bartell, meanwhile, can return to practice as soon as Oct. 27 and play again as early as Nov. 11 at Baltimore.Receiver Darrius Heyward-Bey, who suffered a concussion and neck strain on Sept. 23, was practicing, though it is not known if he has gone through the concussion protocol to be cleared completely.