The Los Angeles Rams have been hit with a brutal defensive setback just days after their disappointing 27–7 season-opening loss to the San Francisco 49ers in Australia.

Myles Garrett, the blockbuster defensive addition who arrived in Los Angeles with enormous expectations, is set to undergo arthroscopic knee surgery and will be placed on injured reserve, forcing him to miss at least four games.

For the Rams, this is more than an ordinary injury.

Garrett was supposed to transform the defensive front and give Sean McVay another elite weapon capable of changing games with a single pass-rushing sequence.

Instead, Los Angeles now faces the difficult task of surviving without its newest superstar.

Myles Garrett Injury Changes Everything

Garrett’s Rams debut already raised concerns.

During the 27–7 defeat against San Francisco, the five-time First-Team All-Pro failed to record a tackle, while dealing with a knee issue that had affected his preparation throughout training camp.

After the game, Garrett acknowledged that he had not performed at his normal level, describing it as the “worst version” of himself.

The situation became considerably more serious when reports emerged that Garrett would undergo arthroscopic knee surgery and move to injured reserve.

The Rams therefore have to prepare for life without one of the NFL’s most dominant pass rushers.

A Superstar Who Was Supposed to Change the Rams

Los Angeles made an enormous investment to acquire Garrett.

The Rams sent Jared Verse, a 2027 first-round pick, a 2028 second-round pick and a 2029 third-round pick to the Cleveland Browns for the superstar edge rusher.

Garrett was coming off a historic 2025 season in which he established a new NFL single-season record with 23 sacks. He also entered Los Angeles with 125.5 career sacks.

Those numbers explain why expectations were so high.

The Rams did not acquire Garrett to simply improve their defense.

They acquired him to make the defense terrifying.

Now, they must find another way to create that same pressure.

The Name Behind the Replacement Buzz

That is where the story becomes especially intriguing.

Almost immediately after news of Garrett’s surgery emerged, attention turned toward the possibility of a dramatic replacement.

One name naturally dominates the conversation: Aaron Donald.

The legendary defensive tackle returned to the Rams after previously stepping away from football, but he did not play in the Australia opener.

Sean McVay had already decided that Donald would remain in Los Angeles rather than make the trip, with the coach emphasizing that the decision was designed to protect the veteran and maximize his eventual impact.

Now Garrett is heading to injured reserve.

Suddenly, Donald’s potential return carries an entirely different level of importance.

Is Aaron Donald the Answer?

There has been no official announcement that Donald has been designated as Garrett’s direct replacement.

That distinction is crucial.

Donald is a defensive tackle, while Garrett operates primarily as an edge rusher, meaning the Rams cannot simply substitute one player for the other.

But Donald could still become the emotional and disruptive centerpiece of a defensive line that desperately needs a spark.

The possibility of seeing Donald finally return against the New York Giants has therefore become one of the biggest storylines surrounding the Rams.

And that is exactly why fans are watching every roster move.

Rams Need a Defensive Response

The Rams already have players such as Byron Young, Josaiah Stewart and Kobie Turner who will be asked to take on greater responsibility.

The coaching staff will also have to find creative ways to manufacture pressure without Garrett commanding constant attention from opposing offensive lines.

That will not be easy.

Garrett’s absence removes one of the most dangerous individual pass-rushing threats in football, and replacing his production will almost certainly require a collective effort.

The Mystery Could Become the Biggest Story

The Rams entered 2026 believing they had assembled a roster capable of making another deep postseason run.

Instead, after the loss to San Francisco and Garrett’s injury, their defense is suddenly facing one of its biggest challenges of the season.

The mystery surrounding Garrett’s replacement only makes the situation more fascinating.

Is Los Angeles preparing a major roster move?

Could Aaron Donald become the veteran force that stabilizes the defense?

Or is the “legendary replacement” story simply social-media speculation ahead of an entirely different move?

For now, the Rams have not officially confirmed a blockbuster replacement.

But one thing is certain: with Myles Garrett sidelined, every move Sean McVay and the Rams’ front office make next will be under a microscope.

And the name eventually taking the spotlight could shock the entire NFL.