1:48pm: The surgery Ramsey underwent will force the Dolphins to drastically alter their cornerback plan this season. Ramsey underwent a full meniscus repair Friday, Ian Rapoport of NFL.com reports (on Twitter), adding that the operation is expected to sideline the recent trade acquisition until December. Ramsey’s post-trade contract reworking fully guaranteed his 2024 salary, giving the ex-Jaguars and Rams standout some security as he prepares for rehab.
11:57am: The Dolphins’ new-look defense suffered a blow yesterday when All-Pro corner Jalen Ramsey suffered a knee injury which will require surgery. Further updates on his status and how the team is reacting to the news have emerged. 
Ramsey suffered a non-contact injury, head coach Mike McDaniel indicated on Friday. The required surgery will take place later today, and the success of that procedure will determine his recovery timeline. In any event, though, Ramsey will indeed miss the beginning of the regular season as originally feared (Twitter link via Adam Beasley of Pro Football Network).
The Dolphins acquired the six-time Pro Bowler as part of their efforts to upgrade their secondary this offseason. A role which would see him play both on the boundary and in the slot under new defensive coordinator Vic Fangio was thought to be in play, but those plans will be on hold for now. McDaniel expressed confidence in the team’s remaining crop of corners, but he added (via Beasley, on Twitter) that Miami will work out depth options in the near future.
A number of experienced options remain on the open market, including William Jackson, Ronald Darby, Casey Hayward and Troy Hill. Byron Jones is also unsigned, but his Dolphins release is believed to have marked an official end to his playing days. Miami currently has just under $13.5MM in cap space, giving them plenty of flexibility to add a low-cost veteran to help offset the loss of Ramsey for what could be an extended period.
The Dolphins must approach any CB signings with the knowledge that they are still in the running for Dalvin Cook, however. A homecoming for the four-time Pro Bowl running back remains a possibility, though his upcoming Jets visit could very well lead him elsewhere in the AFC East. Attention will be paid to the success of Ramsey’s operation, but it will be worth watching how the Dolphins react after it is completed as they look to withstand the absence of their prized offseason acquisition.
Ramsey will miss 3-4 games TOPS.
Besides, Secondary depth is very solid without Ramsey. Healthy Ramsey makes them potentially as elite as the Dline
This comment didn’t age well lol
3-4 months* TOPS
He’s going to be out until December at least, but he will only miss 3-4 games tops? How does that work, do they have multiple bye weeks early or are you just coping?
This is not a small injury. The entire reason the Dolphins defense was so bad last year was the injury to Byron Jones.
The Dolphins defense relies on alot of man coverage. With 2 top tier man corners, they are really, really good.
WithByron Jones and a bad back, they are average at best.
I expect without Ramsey they will look like last year.
I really hate to discount the new D coordinator though – I could be wrong.
With Ramsey, the Dolphins are scary, and a legit threat to the Bills in the AFC East. A under the radar AFC contender. ( of course that depends on Tua as well )
Without him, Im not as concerned. Im not overlooking them by any means – they are very good, but I just don’t feel the same threat.