The NFL suspended the 49ers linebacker one game for an altercation on the sideline that involved a headbutt against a Seahawks player.

Dre Greenlaw's headbutt on Ernest Jones earned him a one-game NFL suspension and added to the 49ers linebacker's growing disciplinary record.

Former NBC reporter Michelle Tafoya's reaction to the suspension of the NFL referee Don't @ Me w/ Dan Dakich

Tafoya: "I think it's appropriate and probably sends a message to the other authorities to shut up."

Greenlaw put his head down and hit Ernest Jones, sending the Seattle Seahawks linebacker scrambling for a towel to wipe up the blood on Sunday. And less than 24 hours later, the NFL dropped the proverbial hammer on Greenlaw.

San Francisco 49ers defensive lineman Greenlaw has been suspended for one game, the NFL announced Monday.

49ers defensive end Dare Greenlaw hits Sam Darnold out of bounds and then tackles Ernest Jones along the Seattle Seahawks bench.

Greenlaw was penalized for unsportsmanlike conduct when he hit Seahawks quarterback Sam Darnold out of bounds during Sunday's sideline game.

Things got even uglier when Greenlaw was surrounded by Seahawks players, Jones walked up to him despite not wearing his helmet, and then Greenlaw headbutted Jones.

Greenlaw will be eligible to return to the 49ers' active roster on Oct. 20, following his team's Oct. 19 game against the Washington Chiefs.

January 20, 2024; Santa Clara, California, USA; San Francisco 49ers linebacker Dare Greenlaw (57) celebrates his third quarter touchdown at Levi's Stadium. (Mark Hoffman - USA TODAY Sports)

Greenlaw may appeal the suspension under the collective bargaining agreement, but there is no indication yet if it will. If he goes that route, the appeal will be heard by a hearing officer — either Derrick Brooks, Jordy Nelson, Ron Rivera or James Thrash.

NFL referees Jeff Seaman and Adrian Hill were suspended after unprofessional fights with players in Week 4.

All hearing officers are former NFL players.

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Outkick reported on Sunday that a fine or ban or both was on the cards for Greenlaw

Greenlaw has a history of getting emotional. and was fined and even suspended.

After a 33-32 win over the New York Giants in Week 7 of the 2025 season while playing for the Denver Broncos, Greenlaw chased and threatened referee Brad Allen as the referee crew was leaving the field.

The league suspended Greenlaw after determining that his aggressive behavior after the game violated Rule 12, Section 3, Article 1(b), which strictly prohibits the use of abusive, threatening or abusive language or gestures toward game officials.

Last week, Greenlaw was fined $11,941 for unsportsmanlike conduct after taunting the Broncos' sideline and head coach Sean Payton.

In 2023, Greenlaw was ejected following a sideline altercation with Philadelphia Eagles safety Dom DiSandro during another sideline incident.

The 49ers have had their share of suspensions this season, and owner Jade York is currently serving a suspension for violating the league's personal conduct policy after he was arrested in a prostitution sting in Ohio.

NFL suspends and fines 49 owner JED YORK for violation of conduct policy related to prostitution arrest.

This history, when taken together, shows Greenlaw as something of a hotshot.

Armando Salguero is the senior writer for NFL OutKick.

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