BALTIMORE -- There once was a time when Ray Lewis served as the centerpiece of the best defense in the NFL.That role is now being played by Zachary Orr, the Baltimore Ravens middle linebacker and leading tackler on a unit ranked No. 1 in the league.Though the names have changed, the philosophy behind the Ravens defense remains the same.So does its effectiveness.The current edition of the Baltimore defense is not yet worthy of being compared some of the great ones of the past, most notably the 2000 version, which set a record for fewest points allowed in a 16-game season before winning the Super Bowl.But entering Monday nights game against the New England Patriots, the Ravens (7-5) are in the mix for the AFC North title on the strength of a defense that has limited the opposition to an NFL-low 73.8 yards rushing per game.Theyre the first-rated defense in the league, so no one has done a better job over the course of the season than them, Patriots quarterback Tom Brady said.They dont give you anything easy. You have to earn it. They do a good mix with their scheme and also with their personnel.The plan hasnt changed much since Lewis arrived in Baltimore in 1996. While the tackles jammed the front of the line, Lewis honed in on the guy with the ball. In case of a pass, safety Ed Reed had Lewis back.Tony Siragusa, Haloti Ngata, Kelly Gregg and several others played front man for Lewis, who retired after Baltimore beat San Francisco in the 2012 Super Bowl.This season, the 335-pound Brandon Williams is paving the way for Orr.He is in the middle of the defense, outside linebacker Terrell Suggs said. That is the heart of it, if you ask me.For a long time around here, we had the great Ray Lewis, but nobody ever really mentioned Kelly Gregg and the dominance that he had. Our middle linebacker and our nose guards, thats pretty much the source of our defense.Dean Pees has followed the practice of former Ravens defensive coordinators Marvin Lewis and Rex Ryan in utilizing that sound strategy.With Williams up front, Orr in the middle and three-time Pro Bowl safety Eric Weddle in the back end, Baltimore has allowed only 17.3 points per game.We know how we want to play fundamentally, Pees said. You just have to play that way.Now in his fifth season as Ravens defensive coordinator, Pees knows how to put together a unit and make it work.Were sitting at the top of the league right now because of the things hes been doing, cornerback Jimmy Smith said.Last weeks 38-6 rout of Miami was one of those rare afternoons when both the offense and defense were clicking in unison. If the offense continues to improve, so will the defense.Ill tell you this: Our defense is going to look even better if -- and when -- our offense goes out and puts up points, Smith said, because we can start playing the defense where we can get after a lot of guys, pin our ears back, get sacks and a lot more turnovers.The Baltimore offense should be tested by the Patriots, who in turn know theyll have to be at their best to score on the Ravens.Asked what concerned him most about the Baltimore defense, New England coach Bill Belichick said, Pretty much everything. Tough to run against, very good on third down, dont give up a lot of points, turn the ball over.You just cant be sloppy around this defense. You have to take good care of the football and youve got to be physical with them. Theyve got some big, strong guys up front.Its been that way for a long, long time. Just ask Orr, who entered the weekend tied for fourth in the NFL with 112 tackles.I have great players around me that have allowed me to flourish in this system, Orr said. Its probably the best situation I could be in.---For more NFL coverage: http://www.pro32.ap.org and http://www.twitter.com/AP-NFLJamie Langenbrunner Devils Jersey .ca look back at each of the Top 10 stories of 2013. Today, we look back at Boston Strong - a citys recovery from tragedy. Ken Daneyko Jersey . - NASCAR announced a 33-race schedule for the 2014 Nationwide Series with virtually no changes from this years slate. http://www.devilssale.com/authentic-taylor-hall-devils-jersey/ . The 18th player to shoot 60 on the tour, Jamieson settled for par on the final hole when his 15-foot birdie chip grazed the edge of the hole and stayed out. After opening with rounds of 66 and 73 to make the cut by a stroke, he had 11 birdies in the bogey-free round. Kyle Palmieri Devils Jersey . "I wrote 36 on my sheet at the beginning of the game," the Cincinnati coach said, referring the yard line the ball would need to be snapped from. Jamie Langenbrunner Jersey . A big centre with all the tools to be an elite player, Johansen paced the Blue Jackets with a standout game Saturday night. He had a goal and two assists for a career-high three points as Columbus beat the New York Islanders 5-2 to snap a five-game losing streak.Thierry Henry has described the level of expectation at Valencia as not normal following the sacking of Gary Neville. The former Manchester United defender took over at the Spanish club - his first full-time managerial role - in December, but was axed this week after only four months in charge.He enjoyed only 10 wins in 28 games - including a nine-game win-less streak in La Liga - and the club are currently only six points above the relegation zone. But Henry, who won two La Liga titles with Barcelona, felt the club and its supporters put unrealistic demands on Neville.The level of expectation at Valencia is not normal, he told Sky Sports.Its not normal because their fans and the press over there expect that team to be battling with Real Madrid and Barcelona when we all know they are not in that bracket yet.Thats where he was going. He was going to a team where if you dont play good football and you dont wain straight away, the fans are going to have a little go at you. After being sacked as Valencia manager, we look back at Gary Nevilles time in Spain During his time in charge, Neville guided Valencia to the semi-finals of the Copa del Rey and produced a thumping 10-0 aggregate win over Rapid Vienna in the Europa League.ddddddddddddBut after finishing fourth last season, Henry felt the supporters demanded better results in the Spanish league.I think its difficult, he added. Skys Spanish football expert, Guillem Balague, gives an insight into why Valencia sacked Gary Neville as their manager When you look at his overall stats, its 10 wins and 11 defeats, which is not that bad. Its just that in the league it didnt happen for him.Valencia is a big club with a big stadium and big fans, but the level of expectation sometimes doesnt match the team that they have.It was always going to be difficult for him. Also See: Bale backs Neville Nevilles Valencia story Nevilles reign in quotes Balague on Neville ' ' '