Dre Greenlaw hits Sam Darnold along Seahawks bench, then chaos and ejection follow with more to come from NFL

San Francisco 49ers linebacker Dre Greenlaw was ejected from Sunday's game against the Seattle Seahawks and could be subject to a suspension next week because he seemingly lost his poise and composure on the opponent's sideline and bench area.

Greenlaw hit Seattle's Sam Darnold as he was running out of bounds along the Seahawks sideline during the second quarter at Lumen Field.

That got him flagged for a personal foul.

And because the play happened along the Seattle sideline and fully onto their bench area, Greenlaw was immediately surrounded by Seahawks players.

Seattle linebacker Ernest Jones, who has in the past offered a very moving verbal support for Darnold, got in Greenlaw's face.

The thing is, Greenlaw was wearing his helmet and Jones was not.

Greenlaw then headbutted Jones.

FOX NFL's cameras showed Jones using a towel to wipe his face, including an apparent cut caused by Greenlaw's headbutt.

NFL FINES SAINTS AND COWBOYS $500K FOR PRACTICE BRAWL, BUT FIGHTS WON'T STOP UNLESS PLAYERS GET FINED Greenlaw was soon ejected from the game.

And what happens next will be up to the NFL, because there definitely will be more action from the league office.

FALCONS' JAMES PEARCE HIT WITH 8-GAME SUSPENSION AS NFL ANNOUNCES WAVE OF BANS ACROSS THE LEAGUE According to NFL Operations guidelines , after the game, the NFL office reviews incidents such as this.

The league can choose to issue a fine, a warning, or a suspension, depending on the severity of the action (such as throwing a punch or severe endangerment of an opponent).

Any suspension is a separate disciplinary ruling, not an automatic rule of disqualification.

KEENAN ALLEN FACES NFL SUSPENSION AFTER BLOOD ALCOHOL LEVEL NEARLY TRIPLE THE LEGAL LIMIT: REPORT A suspension is only issued if the post-game review of the situation determines the act was "conduct detrimental to the League" or a severe violation of player safety.