PITTSBURGH (AP) — The Pittsburgh Steelers will head to Oakland without running back James Conner.Coach Mike Tomlin said Tuesday that Conner is dealing with a sprained left ankle and will not play when the AFC North leaders take on the last-place Raiders.Conner http://www.clevelandbrownsteamonline.com/anthony-zettel-jersey , who is second in the NFL in rushing touchdowns (12) and fifth in yards rushing (909), suffered the injury in the fourth quarter of a 33-30 loss to the Los Angeles Chargers. The team initially believed Conner was dealing with a leg contusion, but said the injury turned out to be more serious than originally thought.The Steelers (7-4-1) will turn to Stevan Ridley and rookie Jaylen Samuels when they face the Raiders. Ridley, an eight-year veteran, has 56 yards on 18 carries this season. Samuels, a fifth-round pick, has seen his playing time increase of late as the primary option of relieving Conner.Samuels has 12 carries for 31 yards this season and has proven to be a capable receiver out of the backfield. Samuels has seven receptions for 54 yards, including a game-tying 10-yard catch-and-run late in the fourth quarter against the Chargers shortly after Conner went down.“We’ve got a great deal of confidence in Ridley, got a great deal of confidence in Jaylen http://www.detroitlionsteamonline.com/jahlani-tavai-jersey , particularly in Jaylen, who has been on the rise last couple weeks,” Tomlin said.Tomlin said the team is planning on taking a committee approach to the running game while Conner is out, but didn’t rule out turning to one back. Pittsburgh addressed the depth issue presented by Conner’s injury by promoting Trey Edmunds from the practice squad. Edmunds’ younger brother, Terrell, is a rookie safety for Pittsburgh. Tomlin expected Trey Edmunds to be available for work on special teams.The Steelers placed wide receiver Justin Hunter on injured reserve after Hunter injured his shoulder diving for an overthrown pass by quarterback Ben Roethlisberger against the Chargers.The injury will give rookie James Washington a chance at moving back up the depth chart. The Steelers sat the second-round pick, who has eight receptions for 77 yards and has struggled with what Tomlin likes to call “detail work,” against Los Angeles in favor of Hunter.“Sometimes you get knocked down,” Tomlin said. “You’ve got to get in the lab and work. A lot of times that’s done in obscurity. There’s not a lot of time on the shelf for James http://www.houstontexansteamonline.com/kahale-warring-jersey , it’ll be exciting to watch him get back on this week and take advantage of someone else’s misfortune.”Pittsburgh does not plan to alter its travel itinerary heading to Oakland (2-10), where the Steelers have not won since 1995. The team will fly out on Saturday as usual. Though Tomlin acknowledged Pittsburgh’s issues when heading west — the Steelers are winless in their past three trips to Oakland, for example — he doesn’t believe his team’s issues in the Pacific time zone have anything to do with logistics.“We could spend a lot of time talking about history,” Tomlin said. “My concern is this group, this week.”NOTES: WR Ryan Switzer is in the concussion protocol but Tomlin is optimistic Switzer will be available against the Raiders. … RT Marcus Gilbert (knee) is “working his way back” according to Tomlin. Gilbert hasn’t played since getting hurt in Cincinnati on Oct. 14. … Long snapper Kam Canady is dealing with a sprained knee. … FB Roosevelt Nix (shoulder) and LB Anthony Chickillo (ankle) were also banged up against the Chargers but could play in Oakland. CHARLOTTE, N.C. (AP) — Panthers coach Ron Rivera learned a valuable lesson when he took over defensive play-calling duties midway through last season: You can’t afford to be predictable in today’s NFL.That’s why Rivera is mixing in a three-man defensive front — along with a few other surprises — to go along with the base 4-3 defensive scheme the Panthers have used the last eight seasons.“The biggest thing is that we are playing so many multiple style offenses that you just can’t line up and let them attack you,” said Rivera, who previously spent six seasons as a defensive coordinator with the Chicago Bears and San Diego Chargers.That’s one reason Carolina drafted Brian Burns in the first round and Christian Miller in the fourth and signed free agent Bruce Irvin, speed edge rushers who have the flexibility to drop into coverage.The Panthers have regularly been a top 10 defense http://www.indianapoliscoltsteamonline.com/bobby-okereke-jersey , which led to them losing defensive coordinators Sean McDermott and Steve Wilks to head coaching jobs elsewhere. Last year Carolina promoted Eric Washington as its third defensive coordinator in three seasons, but when things began to fall apart on that side of the ball Rivera stepped in to assume play-calling duties.“In the middle of the year I started doing some different things, and I saw that every time we did some of those things positive things happened,” Rivera said.That included disguising blitzes, dropping defensive linemen into coverage and mixing up defensive fronts, among other tweaks.The problem was the Panthers didn’t have the personnel to do all of the things Rivera wanted to do, which is why general manager Marty Hurney sought out adding versatile edge rushers.Burns, in particular, is viewed as an integral part of the team’s future in this new more diverse defensive scheme.“It makes the defense more versatile and I come from a school that did it all of the time http://www.jacksonvillejaguarsteamonline.com/jawaan-taylor-jersey ,” said Burns, who played at Florida State. “We played a 4-3, a 3-4 and a whole bunch of other packages, so I’m used to rushing the passer and dropping” into coverage.He’s also familiar with the lingo involved, which should allow him to play more freely and without overthinking things.“Just being able to do both, no offense can really scheme me or know when I am coming at any particularly play,” Burns said. “I can disguise as if I’m dropping and really come off the edge and that can free up me or other people.”When the Panthers go to a 3-4 front look for two-time Pro Bowl defensive tackle Kawann Short to slide out to defensive end.The Panthers are hoping to land free agent defensive tackle Gerald McCoy to play inside alongside Short in their base four-man front. McCoy was cut by Tampa Bay in a salary cap move last month and is deciding between Baltimore, Cleveland and Carolina.The Panthers visited with McCoy last week and Rivera said the meeting went very well. He thinks the Panthers have a “good chance” of signing him, but added that other teams probably feel the same way.“He’s a guy we would love to have here to be a part of what we’re doing http://www.jacksonvillejaguarsteamonline.com/gardner-minshew-ii-jersey ,” Rivera said. “He’s going through the process so we are waiting to see what the outcome is going to be.”The Panthers are still in the early stages of installing their new defensive looks, but Rivera has been pleased by the team’s retention.Now, he said, it’s a matter of time to see how much of what the team is installing can be effectively used this season.“It’s neat to see the things you are capable of doing, but we won’t know (how much) until we get into the preseason or regular season,” Rivera said.NOTES: Cam Newton did not throw a football during Monday’s practice, which was open to the media. However, Rivera said Newton did throw some last week during closed practice sessions. Those are the QB’s first throws since undergoing arthroscopic surgery in January in his right shoulder. He is expected to be ready to practice when training camp arrives.