There is no bigger mystery surrounding the 2017 Jets than: What the heck is going on with Muhammad Wilkerson and Leonard Williams?

The two defensive linemen, who are considered the best players on the team, have had zero impact this season through six games. The two have combined for 0 sacks. These are two former Pro Bowlers who are now in witness protection.

On Sunday, Williams hit Tom Brady once. Wilkerson did not get near him. Brady had enough time to whip up a batch of avocado ice cream on some pass plays.

To help solve what is going on, we turned to Brian Baldinger, a former NFL offensive lineman who is now an analyst for the NFL Network and breaks down the film every week of every game and tweets out plays. This week, he showed a few plays that highlighted how poor the Jets defensive line is playing.

For a team that has been built on the back of the defensive line for much of the last decade, these Jets are unrecognizable.

“That’s not who the Jets are,” Baldinger said. “You can say anything you want about Rex Ryan, but his whole Sunday was about hitting the quarterback. … Tom Brady’s had some miserable days against the Jets. He could have darn well played that game in Bermuda shorts on Sunday.”

No quarterback has had to fear the Jets pass rush this season. They have seven sacks as a team, which ranks 31st in the league. Five sacks from linebackers, two from defensive backs. David Bass, who joined the team in Week 3, is leading the team with two sacks.

Wilkerson and Williams have been invisible in games. Pro Football Focus gives out a pass rush grade. Williams ranks 78th out of 110 interior defenders. Wilkerson ranks 94th.

Wilkerson does not have a quarterback hit this season. That means he has not laid a finger on a quarterback in six games. He has one hurry, as credited by the Jets’ coaches. He has nine solo tackles.