The surging Dallas Cowboys can complete a season sweep of the AFC North with a victory over the visiting Baltimore Ravens in Week 11.The Cowboys (8-1) are riding an NFL-best eight-game winning streak and have already beaten the Pittsburgh Steelers, Cincinnati Bengals and Cleveland Browns. Dallas head coach Jason Garrett, however, acknowledged the Ravens (5-4) pose a huge challenge with the top-ranked defense in the NFL.Theyre a very impressive group, Garrett said. Theyre a very well-coached group. They have a lot of really good players on all three levels of defense. They play with the physical style. Its easy to see why theyre among the best defenses in the league.Baltimore has bounced back from a four-game losing streak with victories over Pittsburgh and Cleveland to take over sole possession of first place in the division.The Ravens were the only team in the division to emerge with a victory in Week 10, and they can further extend their lead in the downtrodden AFC North with a win over Dallas.When you get the lead, you want to keep the lead, Ravens head coach John Harbaugh said. When you keep the lead, you want to extend the lead. That is what we aim to do in every game -- not always successfully, but that is our goal. Certainly, that is going to be the objective during the course of the season.Dallas, meanwhile is in full control of the NFC East. The Cowboys have not lost a game since a 20-19 setback to the New York Giants in the opener.This matchup features a high-flying Dallas offense, ranked fifth in the NFL, going against the Ravens lock-down defense. Dallas has confirmed that rookie quarterback Dak Prescott will get the start this week even though veteran Tony Romo is healthy enough to play. Prescott has given the Cowboys a spark this season, throwing for 2,339 yards with 14 touchdowns and two interceptions. Romo is listed as questionable but is expected to be in uniform.I have playmakers all around me and Pro Bowl guys who have been doing well in this league for a long time, Prescott said. My job is easy when you have those guys around you -- just to get them the ball and allow them to do what they have done.Few players have found any success running against the Ravens stout defensive line, which is allowing just 71.3 yards per game, also best in the NFL. However, Dallas running back Ezekiel Elliott is having an MVP-caliber season. Elliott leads the NFL with 1,005 yards and has nine touchdowns.They are No. (2) running the ball. We are No. 1 against the run, Ravens linebacker Terrell Suggs said. This is NFL football. I think this is very good for our league and our sport. Everybody is going to tune in to watch. To be the best, you have to play the best. It is a challenge for our defense, but we accept it. I think we are just the men for the job.The Cowboys, however, have other weapons on offense, primarily with receiver Dez Bryant and an offensive line that has three former first-round picks (offensive tackle Tyron Smith, center Travis Frederick and right guard Zack Martin).The offensive line is the heart of this offense, Prescott said. We go as they go. They go out there, they play nasty, they play physical, and they know that.Bryant (back) found his way onto the injury report on Friday but is expected to play.The Ravens, on the other hand, are still trying to find more consistency on offense.Quarterback Joe Flacco has thrown for 2,374 yards with nine touchdowns and nine interceptions. Baltimore has also struggled to get its running game on track, which has put additional pressure on Flacco to make plays. The Ravens will be without rookie left guard Alex Lewis (high ankle sprain) and the status of veteran right guard Marshal Yanda (questionable/shoulder) is uncertain. Injuries on the offensive line have contributed to Flaccos struggles this season.It hasnt been perfect, and weve got to get better, Flacco said. Ive got to be better at dealing with some things.Dallas has the leagues third-ranked run defense, allowing 82 yards per game, so Baltimores ground attack is facing another stern challenge.The Cowboys are the only team in the NFL that does not have a victory against the Ravens, losing each of the past four meetings.That is great, Harbaugh said of the series. Does that count in this years standings? Does that help us in any way? No. So we need to be 1-0 against them this year. That is the goal: 1-0 against them this year. Luke Glendening Jersey . 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KANSAS CITY, Mo. -- The Kansas City Chiefs remember not-so-fondly the way they started last season, dropping five of their first six games and spending the rest of the year digging out of the hole.This year, theyd rather start the way they finished.Andy Reid and Co. carry an NFL-leading 10-game regular-season winning streak into Sundays opener against the San Diego Chargers. In fact, the only loss theyve had since October came in the AFC playoffs, when they lost on the road to the New England Patriots.We played some good teams, Im not going to short-change the teams we were playing, Reid said this week, but we settled down as it went and we all did better.So much better that Kansas City went 11-5 and won its first playoff game since January 1994.The sudden about-face came despite losing star running back Jamaal Charles to a torn ACL in his right knee, and with a series of injuries hobbling star pass rusher Justin Houston.And it proved instructive to a team that largely returns intact this year.You have to start fast, Chiefs wide receiver Jeremy Maclin said. If we started fast, we wouldnt have been in the position we were in for the playoffs.The Chargers would love to be in any playoff position.After winning their opener against the Lions, and beating the Browns in Week 4, they went on to lose six straight games and missed the postseason for the second straight year.Lack of production from first-round draft pick Melvin Gordon and the rest of the ground game contributed to their downfall, along with a series of razor-thin losses. But perhaps most troubling was the play of the Chargers porous defense, which they hope to have shored up by signing nose tackle Brandon Mebane and drafting defensive end Joey Bosa third overall.Even though there is some uncertainty whether Bosa will play Sunday , the Chargers still think their defense -- and by extension the entire team -- is better than the 4-12 finish a year ago.The record sticks with you forever, said Chargers coach Mike McCoy, now in his fourth year, but weve got a good football team and now we have to go do it.Like last season, the Chiefs could still be without Charles and Houston on Sunday.Charles has been slow in coming back from surgery following his Week 5 injury last year, and Reid called it a stretch that he will be on the field against San Diego. Houston is out for the foreseeable future following surgery to repair his own ACL in February.Not that Houstons absence, or the fact All-Pro safety Eric Berry missed the entire preseason due to a contract dispute, is making the Chargers feel any better about faccing what was one of the leagues premier defenses a year ago.ddddddddddddWhat did we score, shoot, six points against them last year? Chargers quarterback Philip Rivers said, reflecting on a 33-3 rout in San Diego and a 10-3 in Kansas City. I believe in our defense, but I think it is going to take more than a field goal this time.As the AFC West rivals prepare to kick off the season, here are some things to know:DIVISION DOLDRUMS: The Chargers have lost eight straight games against AFC West foes, and their only two wins in two years have come against winless Raiders teams.I think it has a chance to be one of the more salty, tough divisions in the league, I really do, said Rivers, who is starting his 13th year in it. Four or five years ago it was regarded by many to be a weak division. And now, shoot, its arguably one of the best.BURSTING BACKFIELD: Even without Charles, the Chiefs have a trio of capable running backs in Charcandrick West, Spencer Ware and Knile Davis. West and Ware in particular proved to be a solid one-two punch in Charles absence during the second half of last season.SOLID O-LINE: The Chargers offensive front was a mess last season. Tackle King Dunlap was sidelined by injuries and most of the rest were ineffective. But now that theyre healthy, and with the inking of center Matt Slauson, expectations are once again high for the San Diego offense.HALI, WAIT AND SEE: Pass rusher Tamba Hali skipped most of training camp and all of the Chiefs preseason games to protect his knees, which underwent surgery in the offseason. The veteran will be counted on to pressure Rivers with Houston and fellow linebacker Josh Mauga out with injuries.I think our approach to 91 is going to be the 91 weve seen the last decade, Rivers said. Maybe he wont be, but you have to expect that.SPEAKING OF OFFENSE: Both teams have new coordinators. The Chargers brought back Ken Whisenhunt after 23 unsuccessful games coaching the Titans, while the Chiefs turned their attack over to Brad Childress and Matt Nagy following Doug Pedersons departure for Philadelphia.In both instances, the transition has been relatively seamless.Obviously we had a good start in 13, got our way into the postseason, won a playoff game, Rivers said. We built and did some things in the two years (Whisenhunt) was gone that we liked and we kept, and he brought back some of his own ideas and meshed things together.---AP NFL website: www.pro32.ap.org and www.twitter.com/AP-NFL ' ' '