For Dre Greenlaw, the line between being the physical engine of the San Francisco 49ers’ defense and an outright liability has always been razor-thin. In Week 5 against the Seattle Seahawks, that line vanished entirely. In the middle of an already hostile divisional rivalry at Lumen Field, the 49ers linebacker found himself at the center of an ugly sideline confrontation that cut his game short, and put his availability for the coming weeks in serious jeopardy.

Per NFL reporter Tom Pelissero, “49ers LB Dre Greenlaw was ejected for headbutting Seahawks linebacker Ernest Jones IV. The decision came under a new rule that allows officials to eject players for non-football acts even if they are not flagged.”

The sequence that triggered the ejection began with about 6:30 minutes remaining in the second quarter and San Francisco holding a 14-10 lead. On a 2nd-&-6, Seahawks quarterback Sam Darnold scrambled five yards toward the Seattle sideline before stepping out of bounds as Greenlaw came barreling towards him. Greenlaw pushed him all the way to the boundary, delivering late contact that sent both players falling to the turf inside the Seahawks’ team area. The officials immediately threw a flag on Greenlaw for unnecessary roughness, but the real trouble started when both players got back to their feet.

Surrounded on the opposing turf, Greenlaw was quickly confronted by several Seahawks players, led by Earnest Jones IV, who was standing on the sideline without a helmet. Jones stepped in front of Greenlaw and said something. Greenlaw retaliated by lowering his head and driving his helmet straight into Jones’ bare face.

That blow notably left Jones bleeding from the face while Niners teammates charged into the crowd to drag Greenlaw out of the chaos. Moments later, Jones was seen dabbing his forehead – where the helmet hit had landed – with a towel as his teammates checked up on him.

While referee Land Clark assessed a 15-yard personal foul on the field for the late hit on Darnold, the officiating crew had initially missed the headbutt in real time. That’s when Mark Butterworth, the NFL’s VP of instant replay, and executive Troy Vincent intervened from New York. The league reviewed the footage, determined the strike was a clear non-football act, and radioed down to Clark to have Greenlaw pulled from the game, and escorted to the locker room.

San Fran managed to outlast Seattle 32-29 behind two Brock Purdy touchdowns to preserve an undefeated 5-0 record. But postgame, head coach Kyle Shanahan offered no defense for his linebacker’s lack of discipline when asked if he had a problem with Greenlaw being thrown out of the game.

“No, not at all. I didn’t totally see it, I was told,” Shanahan said. “But that’s how it is. You’re going to get baited big time especially when you’re on their bench. … They told me that he headbutted a guy without a helmet. So, if that’s exactly what happened, then yeah, we got to be a lot smarter than that. Can’t do that.”

Now, this latest officiating decision came after another controversial week for Dre Greenlaw. After San Francisco’s win over the Denver Broncos last week, Greenlaw directed profanity at Denver head coach Sean Payton. The league fined him $11,941 for taunting and offensive language toward the Denver sideline.

That game carried a lot of emotion for Greenlaw, who signed with Denver in 2025 before being abruptly cut after just one season. Following the final whistle against the Broncos in Week 4, Greenlaw tracked down head coach Sean Payton again to vent his frustrations, and later revealed that he was upset that Payton had not personally informed him of his release from Denver earlier in the year.

“I told him to get the f–k off the field. That’s it: ‘Get the f–k off the field,” he told the reporters. “…The disrespect. He couldn’t be man-to-man and call my phone and say, ‘We’re going to cut you.”

But certainly, this season isn’t the only instance when Dre Greenlaw has faced criticism for his on-field confrontations. He was ejected after a sideline altercation with Philadelphia Eagles security chief Don DiSandro in 2023 and was also disqualified for a helmet-to-helmet hit on Justin Herbert in 2022. During his lone season in Denver, the league also suspended him for a game after he chased down and berated referee Brad Allen after the clock hit zero.

After his Week 5 helmet hit, Dre Greenlaw’s file is back on the desk of the NFL’s Office of Accountability. Impermissible use of the helmet or a hit on a defenseless player falls under the league’s most severe unsportsmanlike conduct guidelines. With a Week 4 fine already on his ledger, the league could possibly be weighing both an escalated fine and potential multi-game suspension without pay.