All is not well on the New York Jets’ sideline.

Defensive lineman Quinnen Williams nearly came to blows with assistant coach Aaron Whitecotton during Sunday’s game against Cincinnati Bengals.

The 6-foot-3, 300-pound lineman immediately stood up and started yelling in Whitecotton’s face. The defensive line coach responded, escalating the incident to a screaming match.

Several defensive lineman, including Solomon Thomas and Nathan Shepherd, quickly inserted themselves to separate the two.