Broncos, Seahawks and Jets headline NFL's best secondaries in 2015

In the past few seasons, Seattle's "Legion of Boom"has reigned supreme among NFL secondaries. However, in 2015, there are some other defensive backfields vying for top-dog status.

Through the first four weeks of the season, the Seahawks rank fifth in the league against the pass, but they haven't recorded a single interception. Eight teams have logged five or more picks, and Carolina leads the way with eight on the year -- averaging two per contest.

So is the "Legion of Boom" at risk of ceding its perch atop the league? At this point in the season, which secondary is the NFL's best?

Denver -- no question. The Broncos have a great group in the back end: Aqib Talib, Chris Harris Jr., Darian Stewart, T.J. Ward and Bradley Roby. Consequently, Denver's D ranks No. 1 on third down and has the second-most takeaways in the league (11, behind only the Jets' 13). These DBs are playing the best right now, and Denver boasts the best overall defense in the league.

On top of that, the defense is carrying a Hall of Fame quarterback ( Peyton Manning) to a 4-0 record. That's pretty impressive. Give it another week or two, and I think Seattle will reclaim the throne. Kam Chancellor's absence over the first couple weeks hurt, but now that the strong safety is back, so is the unit.

They were still the "Legion" without Kam, but now they have their "Boom" back. It's only a matter of time until that group gets back to being the best. Oh, easy ... The Jets, with Darrelle Revis, Antonio Cromartie and young safety Calvin Pryor. They have a real talented, high-priced secondary. Their defensive line is what helps the secondary, because QBs have to get the ball out quickly. They do a lot of exotic blitzes, which allows the corners to see things. The Jets' secondary doesn't give up the deep play a lot, and I think that's huge for them. I think the New York Jets and the Denver Broncos are great back there. Jets cornerbacks Darrelle Revis and Antonio Cromartie are quite a combo, and they're both assisted by the help they get up front. The Jets' defense, which leads the NFL in takeaways, has played a massive role in this team's 3-1 start.

I think Denver has a top secondary, with cornerbacks Aqib Talib and Chris Harris Jr. leading the way. The Broncos have some veteran safeties and, like the Jets, get help from a rabid pass rush. All in all, the Broncos have one of the best defenses in the NFL for two reasons: 1) They're talented; 2) they have good cover guys with ball skills. Denver's pass rush makes the quarterback hurry throws and throw inaccurate passes at times. Believe me, the better the pass rush, the more opportunities the secondary is going to get. If the quarterback is a little off, those talented corners will make big defensive plays. I've got to give it to the Arizona Cardinals. Cornerback Patrick Peterson hasn't allowed a 100-yard receiver. Tyrann Mathieu and the rest of the secondary have been playing real well, too. Arizona has logged seven interceptions in four games. The secondary is one of the reasons that the Cardinals have been so good this year. The Broncos have the best secondary because they have so much depth. When you have a team with Aqib Talib, Chris Harris Jr., Bradley Roby and T.J. Ward in the back end, you're dangerous. They can rotate different guys to stay fresh throughout the whole game.

Denver's defense has been so dominant in the first quarter of the season, and the guys listed above have been a big part of that. The Jets and Broncos have significantly closed the gap on the Seahawks, but the "Legion of Boom" remains the premier defensive backfield in the NFL. Richard Sherman, Earl Thomas and Kam Chancellor are not only top players at their respective positions, but they form a unit that suffocates passing games on the perimeter.

While critics point to a simplistic scheme and the Seahawks' willingness to ignore the excessive contact rules on the edges, the fact that Pete Carroll's crew has been able to stifle the NFL's most explosive offenses with a coverage stolen from a high school playbook speaks volumes about the performance and production of the "LOB."