Dolphins' Chop Robinson ruled out vs. 49ers with concussion

David Furones, South Florida Sun-Sentinel on Sep 18, 2026

Published in Football

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NAPA, Calif.— Miami Dolphins edge defender Chop Robinson was ruled out for Sunday’s game against the San Francisco 49ers due to his concussion.

Dolphins coach Jeff Hafley said ahead of the team’s practice on Friday in Napa that Robinson will not play in Sunday’s 4:25 p.m. kickoff at Levi’s Stadium.

Hafley said Robinson suffered the concussion during Wednesday’s practice. With a short turnaround to navigate the NFL’s five-step concussion protocol, Robinson will now look to return the following week when the Dolphins host the Kansas City Chiefs on Sept. 27.

“Chop did sustain a concussion during practice,” Hafley said before Friday drills. “He is in the protocol. He will not play this week. He is doing well. And I will leave it at that for Chop questions.”

His concussion diagnosis was initially revealed when the Dolphins released their first injury report for the week on Wednesday evening, later than usual as the team practiced on the West Coast between games at Las Vegas and San Francisco.

Robinson, the third-year edge rusher who has an important season ahead of him, was listed as a limited participant in Wednesday’s drills on the injury report after he was seen practicing early in the session during a media viewing period.

On Thursday, Robinson did not practice. He instead was first seen watching teammates during team stretch, then walking around the perimeter of the Napa facility alongside a trainer before returning to the sideline on the field and watching individual position drills.

It’s Robinson’s third concussion in the last calendar year. Last season, he suffered one in late October that cost him the following week’s game, and late in the year, he had another one, leading him to sit out the season finale.

“That’s going to hurt,” linebacker Jordyn Brooks said Thursday of the possibility of being without Robinson. “Chop is a great young player who I think is going to be great in this league, so it hurts to have him (out), but it’s got to be the next-man-up mentality.

“It’s an opportunity when you’re the next man up, so I think everybody’s aware of that.”

Without Robinson, the Dolphins will likely do a number of things up front. For one, they can continue to use defensive tackle Zeek Biggers lined up more on the edge as a defensive end, as he did plenty last Sunday in Las Vegas when he started opposite Robinson. Josh Uche, Malik Herring, Robert Beal Jr. and Clelin Ferrell, who is on the practice squad but is a candidate for elevation again, should receive an uptick in snaps in Robinson’s absence.

“It’s all of the above,” Hafley said. “We might do some other things to help out, but those guys, I have confidence in. They’ve been getting better. They all haven’t been here for the entire time, but they’ve done a nice job in practice this week, and it’ll be the next man up.”

Added defensive coordinator Sean Duggan on Thursday: “Your job as a coach is to prepare everybody.”

It’s a key season for Robinson, the 2024 first-round pick out of Penn State, but it started inauspiciously even before the concussion.

In last week’s season-opening loss to the Raiders, he made just one assisted tackle, didn’t apply pressure on Las Vegas quarterback Kirk Cousins and was not particularly strong against the run.

“I thought he was a little hesitant,” Hafley said Monday of Robinson’s Week 1 play. “I don’t think he set edges as violently at times as he did. And then, I thought, as the game went on, he got better. We just need him to pick up and then make sure that it’s consistent throughout the game.”

After this season, the Dolphins will decide on whether to pick up the fifth-year option on Robinson’s rookie deal before he goes into his fourth season.

Also ruled out Friday before the Sunday game was linebacker Ronnie Harrison Jr., who aggravated a pre-existing hamstring injury against the Raiders.

Long snapper Tucker Addington’s status is in doubt with a shoulder injury, and if he can’t play, the team can elevate Cal Adomitis, who was signed this week to the practice squad.

Hafley said he anticipates rookie tight end Seydou Traore would be able to play against the 49ers through thumb and Achilles ailments, barring setbacks.