The Jacksonville Jaguars last season allowed just 4.6 yards per play and racked up 55 sacks, both tops in the league. It was a suffocating defense led by a versatile and athletic front seven to match the modern offenses we see in today's NFL.
Which teams have the best front sevens in 2018? Let's run through the top five based on what I've seen on film, pick out a few potential breakout players, and then I'll give you one thing to keep an eye on this season for each D.
The Jags are still in the top five -- Myles Jack could be in for a monster season. But don't forget about Khalil Mack and the Chicago Bears, who are young and supremely talented. Let's get to the rankings, plus a closer look at teams on the cusp of making it: